21352565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4903}}^1$

素因数の和:4988

約数の個数: 16

約数和(自身を含む): 28011648

約数和(自身を除く): 6659083

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4903, 24515, 63739, 318695, 328501, 1642505, 4270513, 21352565]

約数ペア:

[(1, 21352565), (5, 4270513), (13, 1642505), (65, 328501), (67, 318695), (335, 63739), (871, 24515), (4355, 4903)]