155920

素因数分解:

$2^4\times 5^1\times {\mathrm{1949}}^1$

素因数の和:1962

約数の個数: 20

約数和(自身を含む): 362700

約数和(自身を除く): 206780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1949, 3898, 7796, 9745, 15592, 19490, 31184, 38980, 77960, 155920]

約数ペア:

[(1, 155920), (2, 77960), (4, 38980), (5, 31184), (8, 19490), (10, 15592), (16, 9745), (20, 7796), (40, 3898), (80, 1949)]