81037780

素因数分解:

$2^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{10691}}^1$

素因数の和:11079

約数の個数: 24

約数和(自身を含む): 170644320

約数和(自身を除く): 89606540

約数列:

[1, 2, 4, 5, 10, 20, 379, 758, 1516, 1895, 3790, 7580, 10691, 21382, 42764, 53455, 106910, 213820, 4051889, 8103778, 16207556, 20259445, 40518890, 81037780]

約数ペア:

[(1, 81037780), (2, 40518890), (4, 20259445), (5, 16207556), (10, 8103778), (20, 4051889), (379, 213820), (758, 106910), (1516, 53455), (1895, 42764), (3790, 21382), (7580, 10691)]