21130396

素因数分解:

$2^2\times 7^1\times {\mathrm{461}}^1\times {\mathrm{1637}}^1$

素因数の和:2109

約数の個数: 24

約数和(自身を含む): 42378336

約数和(自身を除く): 21247940

約数列:

[1, 2, 4, 7, 14, 28, 461, 922, 1637, 1844, 3227, 3274, 6454, 6548, 11459, 12908, 22918, 45836, 754657, 1509314, 3018628, 5282599, 10565198, 21130396]

約数ペア:

[(1, 21130396), (2, 10565198), (4, 5282599), (7, 3018628), (14, 1509314), (28, 754657), (461, 45836), (922, 22918), (1637, 12908), (1844, 11459), (3227, 6548), (3274, 6454)]