20196784880

素因数分解:

$2^4\times 5^1\times {\mathrm{2381}}^1\times {\mathrm{106031}}^1$

素因数の和:108425

約数の個数: 40

約数和(自身を含む): 46977689664

約数和(自身を除く): 26780904784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2381, 4762, 9524, 11905, 19048, 23810, 38096, 47620, 95240, 106031, 190480, 212062, 424124, 530155, 848248, 1060310, 1696496, 2120620, 4241240, 8482480, 252459811, 504919622, 1009839244, 1262299055, 2019678488, 2524598110, 4039356976, 5049196220, 10098392440, 20196784880]

約数ペア:

[(1, 20196784880), (2, 10098392440), (4, 5049196220), (5, 4039356976), (8, 2524598110), (10, 2019678488), (16, 1262299055), (20, 1009839244), (40, 504919622), (80, 252459811), (2381, 8482480), (4762, 4241240), (9524, 2120620), (11905, 1696496), (19048, 1060310), (23810, 848248), (38096, 530155), (47620, 424124), (95240, 212062), (106031, 190480)]