131220820

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{34351}}^1$

素因数の和:34551

約数の個数: 24

約数和(自身を含む): 277014528

約数和(自身を除く): 145793708

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 34351, 68702, 137404, 171755, 343510, 687020, 6561041, 13122082, 26244164, 32805205, 65610410, 131220820]

約数ペア:

[(1, 131220820), (2, 65610410), (4, 32805205), (5, 26244164), (10, 13122082), (20, 6561041), (191, 687020), (382, 343510), (764, 171755), (955, 137404), (1910, 68702), (3820, 34351)]