21604910

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{21391}}^1$

素因数の和:21499

約数の個数: 16

約数和(自身を含む): 39275712

約数和(自身を除く): 17670802

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 21391, 42782, 106955, 213910, 2160491, 4320982, 10802455, 21604910]

約数ペア:

[(1, 21604910), (2, 10802455), (5, 4320982), (10, 2160491), (101, 213910), (202, 106955), (505, 42782), (1010, 21391)]