256535500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{647}}^1$

素因数の和:740

約数の個数: 96

約数和(自身を含む): 614210688

約数和(自身を除く): 357675188

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 61, 65, 100, 122, 125, 130, 244, 250, 260, 305, 325, 500, 610, 647, 650, 793, 1220, 1294, 1300, 1525, 1586, 1625, 2588, 3050, 3172, 3235, 3250, 3965, 6100, 6470, 6500, 7625, 7930, 8411, 12940, 15250, 15860, 16175, 16822, 19825, 30500, 32350, 33644, 39467, 39650, 42055, 64700, 78934, 79300, 80875, 84110, 99125, 157868, 161750, 168220, 197335, 198250, 210275, 323500, 394670, 396500, 420550, 513071, 789340, 841100, 986675, 1026142, 1051375, 1973350, 2052284, 2102750, 2565355, 3946700, 4205500, 4933375, 5130710, 9866750, 10261420, 12826775, 19733500, 25653550, 51307100, 64133875, 128267750, 256535500]

約数ペア:

[(1, 256535500), (2, 128267750), (4, 64133875), (5, 51307100), (10, 25653550), (13, 19733500), (20, 12826775), (25, 10261420), (26, 9866750), (50, 5130710), (52, 4933375), (61, 4205500), (65, 3946700), (100, 2565355), (122, 2102750), (125, 2052284), (130, 1973350), (244, 1051375), (250, 1026142), (260, 986675), (305, 841100), (325, 789340), (500, 513071), (610, 420550), (647, 396500), (650, 394670), (793, 323500), (1220, 210275), (1294, 198250), (1300, 197335), (1525, 168220), (1586, 161750), (1625, 157868), (2588, 99125), (3050, 84110), (3172, 80875), (3235, 79300), (3250, 78934), (3965, 64700), (6100, 42055), (6470, 39650), (6500, 39467), (7625, 33644), (7930, 32350), (8411, 30500), (12940, 19825), (15250, 16822), (15860, 16175)]