19890536

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 38188800

約数和(自身を除く): 18298264

約数列:

[1, 2, 4, 8, 101, 103, 202, 206, 239, 404, 412, 478, 808, 824, 956, 1912, 10403, 20806, 24139, 24617, 41612, 48278, 49234, 83224, 96556, 98468, 193112, 196936, 2486317, 4972634, 9945268, 19890536]

約数ペア:

[(1, 19890536), (2, 9945268), (4, 4972634), (8, 2486317), (101, 196936), (103, 193112), (202, 98468), (206, 96556), (239, 83224), (404, 49234), (412, 48278), (478, 41612), (808, 24617), (824, 24139), (956, 20806), (1912, 10403)]