18458980

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1657}}^1$

素因数の和:2223

約数の個数: 24

約数和(自身を含む): 38856888

約数和(自身を除く): 20397908

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 1657, 2228, 2785, 3314, 5570, 6628, 8285, 11140, 16570, 33140, 922949, 1845898, 3691796, 4614745, 9229490, 18458980]

約数ペア:

[(1, 18458980), (2, 9229490), (4, 4614745), (5, 3691796), (10, 1845898), (20, 922949), (557, 33140), (1114, 16570), (1657, 11140), (2228, 8285), (2785, 6628), (3314, 5570)]