256776520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1$

素因数の和:117

約数の個数: 256

約数和(自身を含む): 796884480

約数和(自身を除く): 540107960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 53, 55, 56, 65, 70, 77, 88, 91, 104, 106, 110, 121, 130, 140, 143, 154, 182, 212, 220, 242, 260, 265, 280, 286, 308, 364, 371, 385, 424, 440, 455, 484, 520, 530, 572, 583, 605, 616, 689, 715, 728, 742, 770, 847, 910, 968, 1001, 1060, 1144, 1166, 1210, 1331, 1378, 1430, 1484, 1540, 1573, 1694, 1820, 1855, 2002, 2120, 2332, 2420, 2662, 2756, 2860, 2915, 2968, 3080, 3146, 3388, 3445, 3640, 3710, 4004, 4081, 4235, 4664, 4823, 4840, 5005, 5324, 5512, 5720, 5830, 6292, 6413, 6655, 6776, 6890, 7420, 7579, 7865, 8008, 8162, 8470, 9317, 9646, 10010, 10648, 11011, 11660, 12584, 12826, 13310, 13780, 14840, 15158, 15730, 16324, 16940, 17303, 18634, 19292, 20020, 20405, 22022, 23320, 24115, 25652, 26620, 27560, 30316, 31460, 32065, 32648, 33880, 34606, 37268, 37895, 38584, 40040, 40810, 44044, 44891, 46585, 48230, 51304, 53053, 53240, 55055, 60632, 62920, 64130, 69212, 70543, 74536, 75790, 81620, 83369, 86515, 88088, 89782, 93170, 96460, 106106, 110110, 121121, 128260, 138424, 141086, 151580, 163240, 166738, 173030, 179564, 186340, 192920, 212212, 220220, 224455, 242242, 256520, 265265, 282172, 303160, 333476, 346060, 352715, 359128, 372680, 416845, 424424, 440440, 448910, 484484, 493801, 530530, 564344, 583583, 605605, 666952, 692120, 705430, 833690, 897820, 917059, 968968, 987602, 1061060, 1167166, 1211210, 1410860, 1667380, 1795640, 1834118, 1975204, 2122120, 2334332, 2422420, 2469005, 2821720, 2917915, 3334760, 3668236, 3950408, 4585295, 4668664, 4844840, 4938010, 5835830, 6419413, 7336472, 9170590, 9876020, 11671660, 12838826, 18341180, 19752040, 23343320, 25677652, 32097065, 36682360, 51355304, 64194130, 128388260, 256776520]

約数ペア:

[(1, 256776520), (2, 128388260), (4, 64194130), (5, 51355304), (7, 36682360), (8, 32097065), (10, 25677652), (11, 23343320), (13, 19752040), (14, 18341180), (20, 12838826), (22, 11671660), (26, 9876020), (28, 9170590), (35, 7336472), (40, 6419413), (44, 5835830), (52, 4938010), (53, 4844840), (55, 4668664), (56, 4585295), (65, 3950408), (70, 3668236), (77, 3334760), (88, 2917915), (91, 2821720), (104, 2469005), (106, 2422420), (110, 2334332), (121, 2122120), (130, 1975204), (140, 1834118), (143, 1795640), (154, 1667380), (182, 1410860), (212, 1211210), (220, 1167166), (242, 1061060), (260, 987602), (265, 968968), (280, 917059), (286, 897820), (308, 833690), (364, 705430), (371, 692120), (385, 666952), (424, 605605), (440, 583583), (455, 564344), (484, 530530), (520, 493801), (530, 484484), (572, 448910), (583, 440440), (605, 424424), (616, 416845), (689, 372680), (715, 359128), (728, 352715), (742, 346060), (770, 333476), (847, 303160), (910, 282172), (968, 265265), (1001, 256520), (1060, 242242), (1144, 224455), (1166, 220220), (1210, 212212), (1331, 192920), (1378, 186340), (1430, 179564), (1484, 173030), (1540, 166738), (1573, 163240), (1694, 151580), (1820, 141086), (1855, 138424), (2002, 128260), (2120, 121121), (2332, 110110), (2420, 106106), (2662, 96460), (2756, 93170), (2860, 89782), (2915, 88088), (2968, 86515), (3080, 83369), (3146, 81620), (3388, 75790), (3445, 74536), (3640, 70543), (3710, 69212), (4004, 64130), (4081, 62920), (4235, 60632), (4664, 55055), (4823, 53240), (4840, 53053), (5005, 51304), (5324, 48230), (5512, 46585), (5720, 44891), (5830, 44044), (6292, 40810), (6413, 40040), (6655, 38584), (6776, 37895), (6890, 37268), (7420, 34606), (7579, 33880), (7865, 32648), (8008, 32065), (8162, 31460), (8470, 30316), (9317, 27560), (9646, 26620), (10010, 25652), (10648, 24115), (11011, 23320), (11660, 22022), (12584, 20405), (12826, 20020), (13310, 19292), (13780, 18634), (14840, 17303), (15158, 16940), (15730, 16324)]