21187275

素因数分解:

$3^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{2797}}^1$

素因数の和:2911

約数の個数: 24

約数和(自身を含む): 35389104

約数和(自身を除く): 14201829

約数列:

[1, 3, 5, 15, 25, 75, 101, 303, 505, 1515, 2525, 2797, 7575, 8391, 13985, 41955, 69925, 209775, 282497, 847491, 1412485, 4237455, 7062425, 21187275]

約数ペア:

[(1, 21187275), (3, 7062425), (5, 4237455), (15, 1412485), (25, 847491), (75, 282497), (101, 209775), (303, 69925), (505, 41955), (1515, 13985), (2525, 8391), (2797, 7575)]