39155920

素因数分解:

$2^4\times 5^1\times {\mathrm{489449}}^1$

素因数の和:489462

約数の個数: 20

約数和(自身を含む): 91037700

約数和(自身を除く): 51881780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 489449, 978898, 1957796, 2447245, 3915592, 4894490, 7831184, 9788980, 19577960, 39155920]

約数ペア:

[(1, 39155920), (2, 19577960), (4, 9788980), (5, 7831184), (8, 4894490), (10, 3915592), (16, 2447245), (20, 1957796), (40, 978898), (80, 489449)]