21371475

素因数分解:

$3^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{3607}}^1$

素因数の和:3699

約数の個数: 24

約数和(自身を含む): 35791360

約数和(自身を除く): 14419885

約数列:

[1, 3, 5, 15, 25, 75, 79, 237, 395, 1185, 1975, 3607, 5925, 10821, 18035, 54105, 90175, 270525, 284953, 854859, 1424765, 4274295, 7123825, 21371475]

約数ペア:

[(1, 21371475), (3, 7123825), (5, 4274295), (15, 1424765), (25, 854859), (75, 284953), (79, 270525), (237, 90175), (395, 54105), (1185, 18035), (1975, 10821), (3607, 5925)]