256823840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:635

約数の個数: 192

約数和(自身を含む): 772208640

約数和(自身を除く): 515384800

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 31, 32, 35, 40, 52, 56, 62, 65, 70, 80, 91, 104, 112, 124, 130, 140, 155, 160, 182, 208, 217, 224, 248, 260, 280, 310, 364, 403, 416, 434, 455, 496, 520, 560, 569, 620, 728, 806, 868, 910, 992, 1040, 1085, 1120, 1138, 1240, 1456, 1612, 1736, 1820, 2015, 2080, 2170, 2276, 2480, 2821, 2845, 2912, 3224, 3472, 3640, 3983, 4030, 4340, 4552, 4960, 5642, 5690, 6448, 6944, 7280, 7397, 7966, 8060, 8680, 9104, 11284, 11380, 12896, 14105, 14560, 14794, 15932, 16120, 17360, 17639, 18208, 19915, 22568, 22760, 28210, 29588, 31864, 32240, 34720, 35278, 36985, 39830, 45136, 45520, 51779, 56420, 59176, 63728, 64480, 70556, 73970, 79660, 88195, 90272, 91040, 103558, 112840, 118352, 123473, 127456, 141112, 147940, 159320, 176390, 207116, 225680, 229307, 236704, 246946, 258895, 282224, 295880, 318640, 352780, 414232, 451360, 458614, 493892, 517790, 564448, 591760, 617365, 637280, 705560, 828464, 917228, 987784, 1035580, 1146535, 1183520, 1234730, 1411120, 1605149, 1656928, 1834456, 1975568, 2071160, 2293070, 2469460, 2822240, 3210298, 3668912, 3951136, 4142320, 4586140, 4938920, 6420596, 7337824, 8025745, 8284640, 9172280, 9877840, 12841192, 16051490, 18344560, 19755680, 25682384, 32102980, 36689120, 51364768, 64205960, 128411920, 256823840]

約数ペア:

[(1, 256823840), (2, 128411920), (4, 64205960), (5, 51364768), (7, 36689120), (8, 32102980), (10, 25682384), (13, 19755680), (14, 18344560), (16, 16051490), (20, 12841192), (26, 9877840), (28, 9172280), (31, 8284640), (32, 8025745), (35, 7337824), (40, 6420596), (52, 4938920), (56, 4586140), (62, 4142320), (65, 3951136), (70, 3668912), (80, 3210298), (91, 2822240), (104, 2469460), (112, 2293070), (124, 2071160), (130, 1975568), (140, 1834456), (155, 1656928), (160, 1605149), (182, 1411120), (208, 1234730), (217, 1183520), (224, 1146535), (248, 1035580), (260, 987784), (280, 917228), (310, 828464), (364, 705560), (403, 637280), (416, 617365), (434, 591760), (455, 564448), (496, 517790), (520, 493892), (560, 458614), (569, 451360), (620, 414232), (728, 352780), (806, 318640), (868, 295880), (910, 282224), (992, 258895), (1040, 246946), (1085, 236704), (1120, 229307), (1138, 225680), (1240, 207116), (1456, 176390), (1612, 159320), (1736, 147940), (1820, 141112), (2015, 127456), (2080, 123473), (2170, 118352), (2276, 112840), (2480, 103558), (2821, 91040), (2845, 90272), (2912, 88195), (3224, 79660), (3472, 73970), (3640, 70556), (3983, 64480), (4030, 63728), (4340, 59176), (4552, 56420), (4960, 51779), (5642, 45520), (5690, 45136), (6448, 39830), (6944, 36985), (7280, 35278), (7397, 34720), (7966, 32240), (8060, 31864), (8680, 29588), (9104, 28210), (11284, 22760), (11380, 22568), (12896, 19915), (14105, 18208), (14560, 17639), (14794, 17360), (15932, 16120)]