640939250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1193}}^1$

素因数の和:1524

約数の個数: 64

約数和(自身を含む): 1376863488

約数和(自身を除く): 735924238

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 125, 175, 250, 307, 350, 614, 875, 1193, 1535, 1750, 2149, 2386, 3070, 4298, 5965, 7675, 8351, 10745, 11930, 15350, 16702, 21490, 29825, 38375, 41755, 53725, 59650, 76750, 83510, 107450, 149125, 208775, 268625, 298250, 366251, 417550, 537250, 732502, 1043875, 1831255, 2087750, 2563757, 3662510, 5127514, 9156275, 12818785, 18312550, 25637570, 45781375, 64093925, 91562750, 128187850, 320469625, 640939250]

約数ペア:

[(1, 640939250), (2, 320469625), (5, 128187850), (7, 91562750), (10, 64093925), (14, 45781375), (25, 25637570), (35, 18312550), (50, 12818785), (70, 9156275), (125, 5127514), (175, 3662510), (250, 2563757), (307, 2087750), (350, 1831255), (614, 1043875), (875, 732502), (1193, 537250), (1535, 417550), (1750, 366251), (2149, 298250), (2386, 268625), (3070, 208775), (4298, 149125), (5965, 107450), (7675, 83510), (8351, 76750), (10745, 59650), (11930, 53725), (15350, 41755), (16702, 38375), (21490, 29825)]