21137428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{6067}}^1$

素因数の和:6151

約数の個数: 24

約数和(自身を含む): 40437152

約数和(自身を除く): 19299724

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 6067, 12134, 24268, 78871, 157742, 315484, 406489, 812978, 1625956, 5284357, 10568714, 21137428]

約数ペア:

[(1, 21137428), (2, 10568714), (4, 5284357), (13, 1625956), (26, 812978), (52, 406489), (67, 315484), (134, 157742), (268, 78871), (871, 24268), (1742, 12134), (3484, 6067)]