21499881

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{541}}^1\times {\mathrm{1019}}^1$

素因数の和:1576

約数の個数: 16

約数和(自身を含む): 30959040

約数和(自身を除く): 9459159

約数列:

[1, 3, 13, 39, 541, 1019, 1623, 3057, 7033, 13247, 21099, 39741, 551279, 1653837, 7166627, 21499881]

約数ペア:

[(1, 21499881), (3, 7166627), (13, 1653837), (39, 551279), (541, 39741), (1019, 21099), (1623, 13247), (3057, 7033)]