20368725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1607}}^1$

素因数の和:1646

約数の個数: 36

約数和(自身を含む): 36488736

約数和(自身を除く): 16120011

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 169, 195, 325, 507, 845, 975, 1607, 2535, 4225, 4821, 8035, 12675, 20891, 24105, 40175, 62673, 104455, 120525, 271583, 313365, 522275, 814749, 1357915, 1566825, 4073745, 6789575, 20368725]

約数ペア:

[(1, 20368725), (3, 6789575), (5, 4073745), (13, 1566825), (15, 1357915), (25, 814749), (39, 522275), (65, 313365), (75, 271583), (169, 120525), (195, 104455), (325, 62673), (507, 40175), (845, 24105), (975, 20891), (1607, 12675), (2535, 8035), (4225, 4821)]