20871825

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21407}}^1$

素因数の和:21433

約数の個数: 24

約数和(自身を含む): 37164288

約数和(自身を除く): 16292463

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21407, 64221, 107035, 278291, 321105, 535175, 834873, 1391455, 1605525, 4174365, 6957275, 20871825]

約数ペア:

[(1, 20871825), (3, 6957275), (5, 4174365), (13, 1605525), (15, 1391455), (25, 834873), (39, 535175), (65, 321105), (75, 278291), (195, 107035), (325, 64221), (975, 21407)]