21034540

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13313}}^1$

素因数の和:13401

約数の個数: 24

約数和(自身を含む): 44735040

約数和(自身を除く): 23700500

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13313, 26626, 53252, 66565, 133130, 266260, 1051727, 2103454, 4206908, 5258635, 10517270, 21034540]

約数ペア:

[(1, 21034540), (2, 10517270), (4, 5258635), (5, 4206908), (10, 2103454), (20, 1051727), (79, 266260), (158, 133130), (316, 66565), (395, 53252), (790, 26626), (1580, 13313)]