20851440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{307}}^1$

素因数の和:606

約数の個数: 80

約数和(自身を含む): 65079168

約数和(自身を除く): 44227728

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 283, 307, 566, 614, 849, 921, 1132, 1228, 1415, 1535, 1698, 1842, 2264, 2456, 2830, 3070, 3396, 3684, 4245, 4528, 4605, 4912, 5660, 6140, 6792, 7368, 8490, 9210, 11320, 12280, 13584, 14736, 16980, 18420, 22640, 24560, 33960, 36840, 67920, 73680, 86881, 173762, 260643, 347524, 434405, 521286, 695048, 868810, 1042572, 1303215, 1390096, 1737620, 2085144, 2606430, 3475240, 4170288, 5212860, 6950480, 10425720, 20851440]

約数ペア:

[(1, 20851440), (2, 10425720), (3, 6950480), (4, 5212860), (5, 4170288), (6, 3475240), (8, 2606430), (10, 2085144), (12, 1737620), (15, 1390096), (16, 1303215), (20, 1042572), (24, 868810), (30, 695048), (40, 521286), (48, 434405), (60, 347524), (80, 260643), (120, 173762), (240, 86881), (283, 73680), (307, 67920), (566, 36840), (614, 33960), (849, 24560), (921, 22640), (1132, 18420), (1228, 16980), (1415, 14736), (1535, 13584), (1698, 12280), (1842, 11320), (2264, 9210), (2456, 8490), (2830, 7368), (3070, 6792), (3396, 6140), (3684, 5660), (4245, 4912), (4528, 4605)]