20126049640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8248381}}^1$

素因数の和:8248453

約数の個数: 32

約数和(自身を含む): 46025971560

約数和(自身を除く): 25899921920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8248381, 16496762, 32993524, 41241905, 65987048, 82483810, 164967620, 329935240, 503151241, 1006302482, 2012604964, 2515756205, 4025209928, 5031512410, 10063024820, 20126049640]

約数ペア:

[(1, 20126049640), (2, 10063024820), (4, 5031512410), (5, 4025209928), (8, 2515756205), (10, 2012604964), (20, 1006302482), (40, 503151241), (61, 329935240), (122, 164967620), (244, 82483810), (305, 65987048), (488, 41241905), (610, 32993524), (1220, 16496762), (2440, 8248381)]