256793460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:235

約数の個数: 288

約数和(自身を含む): 938090496

約数和(自身を除く): 681297036

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 31, 33, 35, 42, 44, 55, 60, 62, 66, 70, 77, 84, 93, 105, 110, 121, 124, 132, 140, 154, 155, 163, 165, 186, 210, 217, 220, 231, 242, 308, 310, 326, 330, 341, 363, 372, 385, 420, 434, 462, 465, 484, 489, 605, 620, 651, 652, 660, 682, 726, 770, 815, 847, 868, 924, 930, 978, 1023, 1085, 1141, 1155, 1210, 1302, 1364, 1452, 1540, 1630, 1694, 1705, 1793, 1815, 1860, 1956, 2046, 2170, 2282, 2310, 2387, 2420, 2445, 2541, 2604, 3255, 3260, 3388, 3410, 3423, 3586, 3630, 3751, 4092, 4235, 4340, 4564, 4620, 4774, 4890, 5053, 5082, 5115, 5379, 5705, 6510, 6820, 6846, 7161, 7172, 7260, 7502, 8470, 8965, 9548, 9780, 10106, 10164, 10230, 10758, 11253, 11410, 11935, 12551, 12705, 13020, 13692, 14322, 15004, 15159, 16940, 17115, 17930, 18755, 19723, 20212, 20460, 21516, 22506, 22820, 23870, 25102, 25265, 25410, 26257, 26895, 28644, 30318, 34230, 35371, 35805, 35860, 37510, 37653, 39446, 45012, 47740, 50204, 50530, 50820, 52514, 53790, 55583, 56265, 59169, 60636, 62755, 68460, 70742, 71610, 75020, 75306, 75795, 78771, 78892, 98615, 101060, 105028, 106113, 107580, 111166, 112530, 118338, 125510, 131285, 138061, 141484, 143220, 150612, 151590, 157542, 166749, 176855, 188265, 197230, 212226, 222332, 225060, 236676, 251020, 262570, 276122, 277915, 295845, 303180, 315084, 333498, 353710, 376530, 389081, 393855, 394460, 414183, 424452, 525140, 530565, 552244, 555830, 591690, 611413, 666996, 690305, 707420, 753060, 778162, 787710, 828366, 833745, 1061130, 1111660, 1167243, 1183380, 1222826, 1380610, 1556324, 1575420, 1656732, 1667490, 1834239, 1945405, 2070915, 2122260, 2334486, 2445652, 2761220, 3057065, 3334980, 3668478, 3890810, 4141830, 4279891, 4668972, 5836215, 6114130, 7336956, 7781620, 8283660, 8559782, 9171195, 11672430, 12228260, 12839673, 17119564, 18342390, 21399455, 23344860, 25679346, 36684780, 42798910, 51358692, 64198365, 85597820, 128396730, 256793460]

約数ペア:

[(1, 256793460), (2, 128396730), (3, 85597820), (4, 64198365), (5, 51358692), (6, 42798910), (7, 36684780), (10, 25679346), (11, 23344860), (12, 21399455), (14, 18342390), (15, 17119564), (20, 12839673), (21, 12228260), (22, 11672430), (28, 9171195), (30, 8559782), (31, 8283660), (33, 7781620), (35, 7336956), (42, 6114130), (44, 5836215), (55, 4668972), (60, 4279891), (62, 4141830), (66, 3890810), (70, 3668478), (77, 3334980), (84, 3057065), (93, 2761220), (105, 2445652), (110, 2334486), (121, 2122260), (124, 2070915), (132, 1945405), (140, 1834239), (154, 1667490), (155, 1656732), (163, 1575420), (165, 1556324), (186, 1380610), (210, 1222826), (217, 1183380), (220, 1167243), (231, 1111660), (242, 1061130), (308, 833745), (310, 828366), (326, 787710), (330, 778162), (341, 753060), (363, 707420), (372, 690305), (385, 666996), (420, 611413), (434, 591690), (462, 555830), (465, 552244), (484, 530565), (489, 525140), (605, 424452), (620, 414183), (651, 394460), (652, 393855), (660, 389081), (682, 376530), (726, 353710), (770, 333498), (815, 315084), (847, 303180), (868, 295845), (924, 277915), (930, 276122), (978, 262570), (1023, 251020), (1085, 236676), (1141, 225060), (1155, 222332), (1210, 212226), (1302, 197230), (1364, 188265), (1452, 176855), (1540, 166749), (1630, 157542), (1694, 151590), (1705, 150612), (1793, 143220), (1815, 141484), (1860, 138061), (1956, 131285), (2046, 125510), (2170, 118338), (2282, 112530), (2310, 111166), (2387, 107580), (2420, 106113), (2445, 105028), (2541, 101060), (2604, 98615), (3255, 78892), (3260, 78771), (3388, 75795), (3410, 75306), (3423, 75020), (3586, 71610), (3630, 70742), (3751, 68460), (4092, 62755), (4235, 60636), (4340, 59169), (4564, 56265), (4620, 55583), (4774, 53790), (4890, 52514), (5053, 50820), (5082, 50530), (5115, 50204), (5379, 47740), (5705, 45012), (6510, 39446), (6820, 37653), (6846, 37510), (7161, 35860), (7172, 35805), (7260, 35371), (7502, 34230), (8470, 30318), (8965, 28644), (9548, 26895), (9780, 26257), (10106, 25410), (10164, 25265), (10230, 25102), (10758, 23870), (11253, 22820), (11410, 22506), (11935, 21516), (12551, 20460), (12705, 20212), (13020, 19723), (13692, 18755), (14322, 17930), (15004, 17115), (15159, 16940)]