21221738

素因数分解:

$2^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{757}}^1$

素因数の和:997

約数の個数: 16

約数和(自身を含む): 32418144

約数和(自身を除く): 11196406

約数列:

[1, 2, 107, 131, 214, 262, 757, 1514, 14017, 28034, 80999, 99167, 161998, 198334, 10610869, 21221738]

約数ペア:

[(1, 21221738), (2, 10610869), (107, 198334), (131, 161998), (214, 99167), (262, 80999), (757, 28034), (1514, 14017)]