31241990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{8287}}^1$

素因数の和:8336

約数の個数: 32

約数和(自身を含む): 62657280

約数和(自身を除く): 31415290

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 8287, 16574, 41435, 82870, 107731, 215462, 240323, 480646, 538655, 1077310, 1201615, 2403230, 3124199, 6248398, 15620995, 31241990]

約数ペア:

[(1, 31241990), (2, 15620995), (5, 6248398), (10, 3124199), (13, 2403230), (26, 1201615), (29, 1077310), (58, 538655), (65, 480646), (130, 240323), (145, 215462), (290, 107731), (377, 82870), (754, 41435), (1885, 16574), (3770, 8287)]