21750495

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1571}}^1$

素因数の和:1663

約数の個数: 32

約数和(自身を含む): 38029824

約数和(自身を除く): 16279329

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 195, 213, 355, 923, 1065, 1571, 2769, 4615, 4713, 7855, 13845, 20423, 23565, 61269, 102115, 111541, 306345, 334623, 557705, 1450033, 1673115, 4350099, 7250165, 21750495]

約数ペア:

[(1, 21750495), (3, 7250165), (5, 4350099), (13, 1673115), (15, 1450033), (39, 557705), (65, 334623), (71, 306345), (195, 111541), (213, 102115), (355, 61269), (923, 23565), (1065, 20423), (1571, 13845), (2769, 7855), (4615, 4713)]