21286814

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1\times {\mathrm{491}}^1$

素因数の和:955

約数の個数: 16

約数和(自身を含む): 32678640

約数和(自身を除く): 11391826

約数列:

[1, 2, 53, 106, 409, 491, 818, 982, 21677, 26023, 43354, 52046, 200819, 401638, 10643407, 21286814]

約数ペア:

[(1, 21286814), (2, 10643407), (53, 401638), (106, 200819), (409, 52046), (491, 43354), (818, 26023), (982, 21677)]