20659017625

素因数分解:

$5^3\times {\mathrm{149}}^1\times {\mathrm{521}}^1\times {\mathrm{2129}}^1$

素因数の和:2814

約数の個数: 32

約数和(自身を含む): 26017524000

約数和(自身を除く): 5358506375

約数列:

[1, 5, 25, 125, 149, 521, 745, 2129, 2605, 3725, 10645, 13025, 18625, 53225, 65125, 77629, 266125, 317221, 388145, 1109209, 1586105, 1940725, 5546045, 7930525, 9703625, 27730225, 39652625, 138651125, 165272141, 826360705, 4131803525, 20659017625]

約数ペア:

[(1, 20659017625), (5, 4131803525), (25, 826360705), (125, 165272141), (149, 138651125), (521, 39652625), (745, 27730225), (2129, 9703625), (2605, 7930525), (3725, 5546045), (10645, 1940725), (13025, 1586105), (18625, 1109209), (53225, 388145), (65125, 317221), (77629, 266125)]