90005840

素因数分解:

$2^4\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1783}}^1$

素因数の和:2427

約数の個数: 40

約数和(自身を含む): 209712768

約数和(自身を除く): 119706928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 631, 1262, 1783, 2524, 3155, 3566, 5048, 6310, 7132, 8915, 10096, 12620, 14264, 17830, 25240, 28528, 35660, 50480, 71320, 142640, 1125073, 2250146, 4500292, 5625365, 9000584, 11250730, 18001168, 22501460, 45002920, 90005840]

約数ペア:

[(1, 90005840), (2, 45002920), (4, 22501460), (5, 18001168), (8, 11250730), (10, 9000584), (16, 5625365), (20, 4500292), (40, 2250146), (80, 1125073), (631, 142640), (1262, 71320), (1783, 50480), (2524, 35660), (3155, 28528), (3566, 25240), (5048, 17830), (6310, 14264), (7132, 12620), (8915, 10096)]