20560072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 45586800

約数和(自身を除く): 25026728

約数列:

[1, 2, 4, 8, 13, 17, 26, 29, 34, 52, 58, 68, 104, 116, 136, 221, 232, 377, 401, 442, 493, 754, 802, 884, 986, 1508, 1604, 1768, 1972, 3016, 3208, 3944, 5213, 6409, 6817, 10426, 11629, 12818, 13634, 20852, 23258, 25636, 27268, 41704, 46516, 51272, 54536, 88621, 93032, 151177, 177242, 197693, 302354, 354484, 395386, 604708, 708968, 790772, 1209416, 1581544, 2570009, 5140018, 10280036, 20560072]

約数ペア:

[(1, 20560072), (2, 10280036), (4, 5140018), (8, 2570009), (13, 1581544), (17, 1209416), (26, 790772), (29, 708968), (34, 604708), (52, 395386), (58, 354484), (68, 302354), (104, 197693), (116, 177242), (136, 151177), (221, 93032), (232, 88621), (377, 54536), (401, 51272), (442, 46516), (493, 41704), (754, 27268), (802, 25636), (884, 23258), (986, 20852), (1508, 13634), (1604, 12818), (1768, 11629), (1972, 10426), (3016, 6817), (3208, 6409), (3944, 5213)]