21547425

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{15121}}^1$

素因数の和:15153

約数の個数: 24

約数和(自身を含む): 37502560

約数和(自身を除く): 15955135

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 15121, 45363, 75605, 226815, 287299, 378025, 861897, 1134075, 1436495, 4309485, 7182475, 21547425]

約数ペア:

[(1, 21547425), (3, 7182475), (5, 4309485), (15, 1436495), (19, 1134075), (25, 861897), (57, 378025), (75, 287299), (95, 226815), (285, 75605), (475, 45363), (1425, 15121)]