20512421210

素因数分解:

$2^1\times 5^1\times {\mathrm{2011}}^1\times {\mathrm{1020011}}^1$

素因数の和:1022029

約数の個数: 16

約数和(自身を含む): 36940754592

約数和(自身を除く): 16428333382

約数列:

[1, 2, 5, 10, 2011, 4022, 10055, 20110, 1020011, 2040022, 5100055, 10200110, 2051242121, 4102484242, 10256210605, 20512421210]

約数ペア:

[(1, 20512421210), (2, 10256210605), (5, 4102484242), (10, 2051242121), (2011, 10200110), (4022, 5100055), (10055, 2040022), (20110, 1020011)]