20480460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:85

約数の個数: 288

約数和(自身を含む): 80080896

約数和(自身を除く): 59600436

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 20, 21, 22, 26, 28, 30, 31, 33, 35, 39, 42, 44, 52, 55, 60, 62, 65, 66, 70, 77, 78, 84, 91, 93, 105, 110, 121, 124, 130, 132, 140, 143, 154, 155, 156, 165, 182, 186, 195, 210, 217, 220, 231, 242, 260, 273, 286, 308, 310, 330, 341, 363, 364, 372, 385, 390, 403, 420, 429, 434, 455, 462, 465, 484, 546, 572, 605, 620, 651, 660, 682, 715, 726, 770, 780, 806, 847, 858, 868, 910, 924, 930, 1001, 1023, 1085, 1092, 1155, 1209, 1210, 1302, 1364, 1365, 1430, 1452, 1540, 1573, 1612, 1694, 1705, 1716, 1815, 1820, 1860, 2002, 2015, 2046, 2145, 2170, 2310, 2387, 2418, 2420, 2541, 2604, 2730, 2821, 2860, 3003, 3146, 3255, 3388, 3410, 3630, 3751, 4004, 4030, 4092, 4235, 4290, 4340, 4433, 4620, 4719, 4774, 4836, 5005, 5082, 5115, 5460, 5642, 6006, 6045, 6292, 6510, 6820, 7161, 7260, 7502, 7865, 8060, 8463, 8470, 8580, 8866, 9438, 9548, 10010, 10164, 10230, 11011, 11253, 11284, 11935, 12012, 12090, 12705, 13020, 13299, 14105, 14322, 15004, 15015, 15730, 16926, 16940, 17732, 18755, 18876, 20020, 20460, 22022, 22165, 22506, 23595, 23870, 24180, 25410, 26257, 26598, 28210, 28644, 30030, 31031, 31460, 33033, 33852, 35805, 37510, 42315, 44044, 44330, 45012, 47190, 47740, 48763, 50820, 52514, 53196, 55055, 56265, 56420, 60060, 62062, 66066, 66495, 71610, 75020, 78771, 84630, 88660, 93093, 94380, 97526, 105028, 110110, 112530, 124124, 131285, 132132, 132990, 143220, 146289, 155155, 157542, 165165, 169260, 186186, 195052, 220220, 225060, 243815, 262570, 265980, 292578, 310310, 315084, 330330, 341341, 372372, 393855, 465465, 487630, 525140, 585156, 620620, 660660, 682682, 731445, 787710, 930930, 975260, 1024023, 1365364, 1462890, 1575420, 1706705, 1861860, 2048046, 2925780, 3413410, 4096092, 5120115, 6826820, 10240230, 20480460]

約数ペア:

[(1, 20480460), (2, 10240230), (3, 6826820), (4, 5120115), (5, 4096092), (6, 3413410), (7, 2925780), (10, 2048046), (11, 1861860), (12, 1706705), (13, 1575420), (14, 1462890), (15, 1365364), (20, 1024023), (21, 975260), (22, 930930), (26, 787710), (28, 731445), (30, 682682), (31, 660660), (33, 620620), (35, 585156), (39, 525140), (42, 487630), (44, 465465), (52, 393855), (55, 372372), (60, 341341), (62, 330330), (65, 315084), (66, 310310), (70, 292578), (77, 265980), (78, 262570), (84, 243815), (91, 225060), (93, 220220), (105, 195052), (110, 186186), (121, 169260), (124, 165165), (130, 157542), (132, 155155), (140, 146289), (143, 143220), (154, 132990), (155, 132132), (156, 131285), (165, 124124), (182, 112530), (186, 110110), (195, 105028), (210, 97526), (217, 94380), (220, 93093), (231, 88660), (242, 84630), (260, 78771), (273, 75020), (286, 71610), (308, 66495), (310, 66066), (330, 62062), (341, 60060), (363, 56420), (364, 56265), (372, 55055), (385, 53196), (390, 52514), (403, 50820), (420, 48763), (429, 47740), (434, 47190), (455, 45012), (462, 44330), (465, 44044), (484, 42315), (546, 37510), (572, 35805), (605, 33852), (620, 33033), (651, 31460), (660, 31031), (682, 30030), (715, 28644), (726, 28210), (770, 26598), (780, 26257), (806, 25410), (847, 24180), (858, 23870), (868, 23595), (910, 22506), (924, 22165), (930, 22022), (1001, 20460), (1023, 20020), (1085, 18876), (1092, 18755), (1155, 17732), (1209, 16940), (1210, 16926), (1302, 15730), (1364, 15015), (1365, 15004), (1430, 14322), (1452, 14105), (1540, 13299), (1573, 13020), (1612, 12705), (1694, 12090), (1705, 12012), (1716, 11935), (1815, 11284), (1820, 11253), (1860, 11011), (2002, 10230), (2015, 10164), (2046, 10010), (2145, 9548), (2170, 9438), (2310, 8866), (2387, 8580), (2418, 8470), (2420, 8463), (2541, 8060), (2604, 7865), (2730, 7502), (2821, 7260), (2860, 7161), (3003, 6820), (3146, 6510), (3255, 6292), (3388, 6045), (3410, 6006), (3630, 5642), (3751, 5460), (4004, 5115), (4030, 5082), (4092, 5005), (4235, 4836), (4290, 4774), (4340, 4719), (4433, 4620)]