20816492

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{659}}^1$

素因数の和:865

約数の個数: 24

約数和(自身を含む): 37422000

約数和(自身を除く): 16605508

約数列:

[1, 2, 4, 53, 106, 149, 212, 298, 596, 659, 1318, 2636, 7897, 15794, 31588, 34927, 69854, 98191, 139708, 196382, 392764, 5204123, 10408246, 20816492]

約数ペア:

[(1, 20816492), (2, 10408246), (4, 5204123), (53, 392764), (106, 196382), (149, 139708), (212, 98191), (298, 69854), (596, 34927), (659, 31588), (1318, 15794), (2636, 7897)]