19720877570

素因数分解:

$2^1\times 5^1\times {\mathrm{12821}}^1\times {\mathrm{153817}}^1$

素因数の和:166645

約数の個数: 16

約数和(自身を含む): 35500579128

約数和(自身を除く): 15779701558

約数列:

[1, 2, 5, 10, 12821, 25642, 64105, 128210, 153817, 307634, 769085, 1538170, 1972087757, 3944175514, 9860438785, 19720877570]

約数ペア:

[(1, 19720877570), (2, 9860438785), (5, 3944175514), (10, 1972087757), (12821, 1538170), (25642, 769085), (64105, 307634), (128210, 153817)]