81539540

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{55849}}^1$

素因数の和:55931

約数の個数: 24

約数和(自身を含む): 173581800

約数和(自身を除く): 92042260

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 55849, 111698, 223396, 279245, 558490, 1116980, 4076977, 8153954, 16307908, 20384885, 40769770, 81539540]

約数ペア:

[(1, 81539540), (2, 40769770), (4, 20384885), (5, 16307908), (10, 8153954), (20, 4076977), (73, 1116980), (146, 558490), (292, 279245), (365, 223396), (730, 111698), (1460, 55849)]