155890820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{410239}}^1$

素因数の和:410267

約数の個数: 24

約数和(自身を含む): 344601600

約数和(自身を除く): 188710780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 410239, 820478, 1640956, 2051195, 4102390, 7794541, 8204780, 15589082, 31178164, 38972705, 77945410, 155890820]

約数ペア:

[(1, 155890820), (2, 77945410), (4, 38972705), (5, 31178164), (10, 15589082), (19, 8204780), (20, 7794541), (38, 4102390), (76, 2051195), (95, 1640956), (190, 820478), (380, 410239)]