19698020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31771}}^1$

素因数の和:31811

約数の個数: 24

約数和(自身を含む): 42701568

約数和(自身を除く): 23003548

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31771, 63542, 127084, 158855, 317710, 635420, 984901, 1969802, 3939604, 4924505, 9849010, 19698020]

約数ペア:

[(1, 19698020), (2, 9849010), (4, 4924505), (5, 3939604), (10, 1969802), (20, 984901), (31, 635420), (62, 317710), (124, 158855), (155, 127084), (310, 63542), (620, 31771)]