21107863

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1993}}^1$

素因数の和:2106

約数の個数: 16

約数和(自身を含む): 25842240

約数和(自身を除く): 4734377

約数列:

[1, 7, 17, 89, 119, 623, 1513, 1993, 10591, 13951, 33881, 177377, 237167, 1241639, 3015409, 21107863]

約数ペア:

[(1, 21107863), (7, 3015409), (17, 1241639), (89, 237167), (119, 177377), (623, 33881), (1513, 13951), (1993, 10591)]