21204029

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{383}}^1\times {\mathrm{719}}^1$

素因数の和:1120

約数の個数: 16

約数和(自身を含む): 26542080

約数和(自身を除く): 5338051

約数列:

[1, 7, 11, 77, 383, 719, 2681, 4213, 5033, 7909, 29491, 55363, 275377, 1927639, 3029147, 21204029]

約数ペア:

[(1, 21204029), (7, 3029147), (11, 1927639), (77, 275377), (383, 55363), (719, 29491), (2681, 7909), (4213, 5033)]