21143525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{971}}^1$

素因数の和:1061

約数の個数: 24

約数和(自身を含む): 28685664

約数和(自身を除く): 7542139

約数列:

[1, 5, 13, 25, 65, 67, 325, 335, 871, 971, 1675, 4355, 4855, 12623, 21775, 24275, 63115, 65057, 315575, 325285, 845741, 1626425, 4228705, 21143525]

約数ペア:

[(1, 21143525), (5, 4228705), (13, 1626425), (25, 845741), (65, 325285), (67, 315575), (325, 65057), (335, 63115), (871, 24275), (971, 21775), (1675, 12623), (4355, 4855)]