21504225

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{9887}}^1$

素因数の和:9929

約数の個数: 24

約数和(自身を含む): 36783360

約数和(自身を除く): 15279135

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 9887, 29661, 49435, 148305, 247175, 286723, 741525, 860169, 1433615, 4300845, 7168075, 21504225]

約数ペア:

[(1, 21504225), (3, 7168075), (5, 4300845), (15, 1433615), (25, 860169), (29, 741525), (75, 286723), (87, 247175), (145, 148305), (435, 49435), (725, 29661), (2175, 9887)]