21640984

素因数分解:

$2^3\times {\mathrm{1423}}^1\times {\mathrm{1901}}^1$

素因数の和:3330

約数の個数: 16

約数和(自身を含む): 40626720

約数和(自身を除く): 18985736

約数列:

[1, 2, 4, 8, 1423, 1901, 2846, 3802, 5692, 7604, 11384, 15208, 2705123, 5410246, 10820492, 21640984]

約数ペア:

[(1, 21640984), (2, 10820492), (4, 5410246), (8, 2705123), (1423, 15208), (1901, 11384), (2846, 7604), (3802, 5692)]