21100521

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{659}}^1\times {\mathrm{821}}^1$

素因数の和:1496

約数の個数: 16

約数和(自身を含む): 30381120

約数和(自身を除く): 9280599

約数列:

[1, 3, 13, 39, 659, 821, 1977, 2463, 8567, 10673, 25701, 32019, 541039, 1623117, 7033507, 21100521]

約数ペア:

[(1, 21100521), (3, 7033507), (13, 1623117), (39, 541039), (659, 32019), (821, 25701), (1977, 10673), (2463, 8567)]