21805924

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{7561}}^1$

素因数の和:7675

約数の個数: 24

約数和(自身を含む): 44041088

約数和(自身を除く): 22235164

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 7561, 15122, 30244, 52927, 105854, 211708, 778783, 1557566, 3115132, 5451481, 10902962, 21805924]

約数ペア:

[(1, 21805924), (2, 10902962), (4, 5451481), (7, 3115132), (14, 1557566), (28, 778783), (103, 211708), (206, 105854), (412, 52927), (721, 30244), (1442, 15122), (2884, 7561)]