21125125

素因数分解:

$5^3\times 7^2\times {\mathrm{3449}}^1$

素因数の和:3478

約数の個数: 24

約数和(自身を含む): 30677400

約数和(自身を除く): 9552275

約数列:

[1, 5, 7, 25, 35, 49, 125, 175, 245, 875, 1225, 3449, 6125, 17245, 24143, 86225, 120715, 169001, 431125, 603575, 845005, 3017875, 4225025, 21125125]

約数ペア:

[(1, 21125125), (5, 4225025), (7, 3017875), (25, 845005), (35, 603575), (49, 431125), (125, 169001), (175, 120715), (245, 86225), (875, 24143), (1225, 17245), (3449, 6125)]