21907708

素因数分解:

$2^2\times {\mathrm{101}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:573

約数の個数: 24

約数和(自身を含む): 39052944

約数和(自身を除く): 17145236

約数列:

[1, 2, 4, 101, 202, 211, 257, 404, 422, 514, 844, 1028, 21311, 25957, 42622, 51914, 54227, 85244, 103828, 108454, 216908, 5476927, 10953854, 21907708]

約数ペア:

[(1, 21907708), (2, 10953854), (4, 5476927), (101, 216908), (202, 108454), (211, 103828), (257, 85244), (404, 54227), (422, 51914), (514, 42622), (844, 25957), (1028, 21311)]