21000779005

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1\times {\mathrm{255127}}^1$

素因数の和:255396

約数の個数: 16

約数和(自身を含む): 25606687104

約数和(自身を除く): 4605908099

約数列:

[1, 5, 101, 163, 505, 815, 16463, 82315, 255127, 1275635, 25767827, 41585701, 128839135, 207928505, 4200155801, 21000779005]

約数ペア:

[(1, 21000779005), (5, 4200155801), (101, 207928505), (163, 128839135), (505, 41585701), (815, 25767827), (16463, 1275635), (82315, 255127)]