19913929

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{691}}^1$

素因数の和:900

約数の個数: 16

約数和(自身を含む): 23915520

約数和(自身を除く): 4001591

約数列:

[1, 7, 23, 161, 179, 691, 1253, 4117, 4837, 15893, 28819, 111251, 123689, 865823, 2844847, 19913929]

約数ペア:

[(1, 19913929), (7, 2844847), (23, 865823), (161, 123689), (179, 111251), (691, 28819), (1253, 15893), (4117, 4837)]