21066910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123923}}^1$

素因数の和:123947

約数の個数: 16

約数和(自身を含む): 40151376

約数和(自身を除く): 19084466

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123923, 247846, 619615, 1239230, 2106691, 4213382, 10533455, 21066910]

約数ペア:

[(1, 21066910), (2, 10533455), (5, 4213382), (10, 2106691), (17, 1239230), (34, 619615), (85, 247846), (170, 123923)]