20668780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{93949}}^1$

素因数の和:93969

約数の個数: 24

約数和(自身を含む): 47350800

約数和(自身を除く): 26682020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 93949, 187898, 375796, 469745, 939490, 1033439, 1878980, 2066878, 4133756, 5167195, 10334390, 20668780]

約数ペア:

[(1, 20668780), (2, 10334390), (4, 5167195), (5, 4133756), (10, 2066878), (11, 1878980), (20, 1033439), (22, 939490), (44, 469745), (55, 375796), (110, 187898), (220, 93949)]