21375991

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{467}}^1\times {\mathrm{503}}^1$

素因数の和:990

約数の個数: 16

約数和(自身を含む): 26417664

約数和(自身を除く): 5041673

約数列:

[1, 7, 13, 91, 467, 503, 3269, 3521, 6071, 6539, 42497, 45773, 234901, 1644307, 3053713, 21375991]

約数ペア:

[(1, 21375991), (7, 3053713), (13, 1644307), (91, 234901), (467, 45773), (503, 42497), (3269, 6539), (3521, 6071)]