19780850

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{3917}}^1$

素因数の和:4030

約数の個数: 24

約数和(自身を含む): 37166148

約数和(自身を除く): 17385298

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 3917, 5050, 7834, 19585, 39170, 97925, 195850, 395617, 791234, 1978085, 3956170, 9890425, 19780850]

約数ペア:

[(1, 19780850), (2, 9890425), (5, 3956170), (10, 1978085), (25, 791234), (50, 395617), (101, 195850), (202, 97925), (505, 39170), (1010, 19585), (2525, 7834), (3917, 5050)]