21648008

素因数分解:

$2^3\times {\mathrm{1151}}^1\times {\mathrm{2351}}^1$

素因数の和:3508

約数の個数: 16

約数和(自身を含む): 40642560

約数和(自身を除く): 18994552

約数列:

[1, 2, 4, 8, 1151, 2302, 2351, 4604, 4702, 9208, 9404, 18808, 2706001, 5412002, 10824004, 21648008]

約数ペア:

[(1, 21648008), (2, 10824004), (4, 5412002), (8, 2706001), (1151, 18808), (2302, 9404), (2351, 9208), (4604, 4702)]