20751825

素因数分解:

$3^1\times 5^2\times {\mathrm{271}}^1\times {\mathrm{1021}}^1$

素因数の和:1305

約数の個数: 24

約数和(自身を含む): 34470016

約数和(自身を除く): 13718191

約数列:

[1, 3, 5, 15, 25, 75, 271, 813, 1021, 1355, 3063, 4065, 5105, 6775, 15315, 20325, 25525, 76575, 276691, 830073, 1383455, 4150365, 6917275, 20751825]

約数ペア:

[(1, 20751825), (3, 6917275), (5, 4150365), (15, 1383455), (25, 830073), (75, 276691), (271, 76575), (813, 25525), (1021, 20325), (1355, 15315), (3063, 6775), (4065, 5105)]