397202020

素因数分解:

$2^2\times 5^1\times {\mathrm{1559}}^1\times {\mathrm{12739}}^1$

素因数の和:14307

約数の個数: 24

約数和(自身を含む): 834724800

約数和(自身を除く): 437522780

約数列:

[1, 2, 4, 5, 10, 20, 1559, 3118, 6236, 7795, 12739, 15590, 25478, 31180, 50956, 63695, 127390, 254780, 19860101, 39720202, 79440404, 99300505, 198601010, 397202020]

約数ペア:

[(1, 397202020), (2, 198601010), (4, 99300505), (5, 79440404), (10, 39720202), (20, 19860101), (1559, 254780), (3118, 127390), (6236, 63695), (7795, 50956), (12739, 31180), (15590, 25478)]