21003916

素因数分解:

$2^2\times {\mathrm{1129}}^1\times {\mathrm{4651}}^1$

素因数の和:5784

約数の個数: 12

約数和(自身を含む): 36797320

約数和(自身を除く): 15793404

約数列:

[1, 2, 4, 1129, 2258, 4516, 4651, 9302, 18604, 5250979, 10501958, 21003916]

約数ペア:

[(1, 21003916), (2, 10501958), (4, 5250979), (1129, 18604), (2258, 9302), (4516, 4651)]