21264932

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{379}}^1$

素因数の和:492

約数の個数: 36

約数和(自身を含む): 40889520

約数和(自身を除く): 19624588

約数列:

[1, 2, 4, 13, 26, 52, 83, 166, 169, 332, 338, 379, 676, 758, 1079, 1516, 2158, 4316, 4927, 9854, 14027, 19708, 28054, 31457, 56108, 62914, 64051, 125828, 128102, 256204, 408941, 817882, 1635764, 5316233, 10632466, 21264932]

約数ペア:

[(1, 21264932), (2, 10632466), (4, 5316233), (13, 1635764), (26, 817882), (52, 408941), (83, 256204), (166, 128102), (169, 125828), (332, 64051), (338, 62914), (379, 56108), (676, 31457), (758, 28054), (1079, 19708), (1516, 14027), (2158, 9854), (4316, 4927)]