158393020

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{20359}}^1$

素因数の和:20757

約数の個数: 24

約数和(自身を含む): 333496800

約数和(自身を除く): 175103780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 20359, 40718, 81436, 101795, 203590, 407180, 7919651, 15839302, 31678604, 39598255, 79196510, 158393020]

約数ペア:

[(1, 158393020), (2, 79196510), (4, 39598255), (5, 31678604), (10, 15839302), (20, 7919651), (389, 407180), (778, 203590), (1556, 101795), (1945, 81436), (3890, 40718), (7780, 20359)]