81126580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{213491}}^1$

素因数の和:213519

約数の個数: 24

約数和(自身を含む): 179333280

約数和(自身を除く): 98206700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 213491, 426982, 853964, 1067455, 2134910, 4056329, 4269820, 8112658, 16225316, 20281645, 40563290, 81126580]

約数ペア:

[(1, 81126580), (2, 40563290), (4, 20281645), (5, 16225316), (10, 8112658), (19, 4269820), (20, 4056329), (38, 2134910), (76, 1067455), (95, 853964), (190, 426982), (380, 213491)]