20307440

素因数分解:

$2^4\times 5^1\times {\mathrm{313}}^1\times {\mathrm{811}}^1$

素因数の和:1137

約数の個数: 40

約数和(自身を含む): 47424048

約数和(自身を除く): 27116608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 313, 626, 811, 1252, 1565, 1622, 2504, 3130, 3244, 4055, 5008, 6260, 6488, 8110, 12520, 12976, 16220, 25040, 32440, 64880, 253843, 507686, 1015372, 1269215, 2030744, 2538430, 4061488, 5076860, 10153720, 20307440]

約数ペア:

[(1, 20307440), (2, 10153720), (4, 5076860), (5, 4061488), (8, 2538430), (10, 2030744), (16, 1269215), (20, 1015372), (40, 507686), (80, 253843), (313, 64880), (626, 32440), (811, 25040), (1252, 16220), (1565, 12976), (1622, 12520), (2504, 8110), (3130, 6488), (3244, 6260), (4055, 5008)]