20016545

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1576

約数の個数: 16

約数和(自身を含む): 25090560

約数和(自身を除く): 5074015

約数列:

[1, 5, 31, 89, 155, 445, 1451, 2759, 7255, 13795, 44981, 129139, 224905, 645695, 4003309, 20016545]

約数ペア:

[(1, 20016545), (5, 4003309), (31, 645695), (89, 224905), (155, 129139), (445, 44981), (1451, 13795), (2759, 7255)]