39969640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16381}}^1$

素因数の和:16453

約数の個数: 32

約数和(自身を含む): 91411560

約数和(自身を除く): 51441920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 16381, 32762, 65524, 81905, 131048, 163810, 327620, 655240, 999241, 1998482, 3996964, 4996205, 7993928, 9992410, 19984820, 39969640]

約数ペア:

[(1, 39969640), (2, 19984820), (4, 9992410), (5, 7993928), (8, 4996205), (10, 3996964), (20, 1998482), (40, 999241), (61, 655240), (122, 327620), (244, 163810), (305, 131048), (488, 81905), (610, 65524), (1220, 32762), (2440, 16381)]