640427100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{281}}^1$

素因数の和:476

約数の個数: 144

約数和(自身を含む): 1903378176

約数和(自身を除く): 1262951076

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 71, 75, 100, 107, 142, 150, 213, 214, 281, 284, 300, 321, 355, 426, 428, 535, 562, 642, 710, 843, 852, 1065, 1070, 1124, 1284, 1405, 1420, 1605, 1686, 1775, 2130, 2140, 2675, 2810, 3210, 3372, 3550, 4215, 4260, 5325, 5350, 5620, 6420, 7025, 7100, 7597, 8025, 8430, 10650, 10700, 14050, 15194, 16050, 16860, 19951, 21075, 21300, 22791, 28100, 30067, 30388, 32100, 37985, 39902, 42150, 45582, 59853, 60134, 75970, 79804, 84300, 90201, 91164, 99755, 113955, 119706, 120268, 150335, 151940, 180402, 189925, 199510, 227910, 239412, 299265, 300670, 360804, 379850, 399020, 451005, 455820, 498775, 569775, 598530, 601340, 751675, 759700, 902010, 997550, 1139550, 1197060, 1496325, 1503350, 1804020, 1995100, 2134757, 2255025, 2279100, 2992650, 3006700, 4269514, 4510050, 5985300, 6404271, 8539028, 9020100, 10673785, 12808542, 21347570, 25617084, 32021355, 42695140, 53368925, 64042710, 106737850, 128085420, 160106775, 213475700, 320213550, 640427100]

約数ペア:

[(1, 640427100), (2, 320213550), (3, 213475700), (4, 160106775), (5, 128085420), (6, 106737850), (10, 64042710), (12, 53368925), (15, 42695140), (20, 32021355), (25, 25617084), (30, 21347570), (50, 12808542), (60, 10673785), (71, 9020100), (75, 8539028), (100, 6404271), (107, 5985300), (142, 4510050), (150, 4269514), (213, 3006700), (214, 2992650), (281, 2279100), (284, 2255025), (300, 2134757), (321, 1995100), (355, 1804020), (426, 1503350), (428, 1496325), (535, 1197060), (562, 1139550), (642, 997550), (710, 902010), (843, 759700), (852, 751675), (1065, 601340), (1070, 598530), (1124, 569775), (1284, 498775), (1405, 455820), (1420, 451005), (1605, 399020), (1686, 379850), (1775, 360804), (2130, 300670), (2140, 299265), (2675, 239412), (2810, 227910), (3210, 199510), (3372, 189925), (3550, 180402), (4215, 151940), (4260, 150335), (5325, 120268), (5350, 119706), (5620, 113955), (6420, 99755), (7025, 91164), (7100, 90201), (7597, 84300), (8025, 79804), (8430, 75970), (10650, 60134), (10700, 59853), (14050, 45582), (15194, 42150), (16050, 39902), (16860, 37985), (19951, 32100), (21075, 30388), (21300, 30067), (22791, 28100)]