20412020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12919}}^1$

素因数の和:13007

約数の個数: 24

約数和(自身を含む): 43411200

約数和(自身を除く): 22999180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12919, 25838, 51676, 64595, 129190, 258380, 1020601, 2041202, 4082404, 5103005, 10206010, 20412020]

約数ペア:

[(1, 20412020), (2, 10206010), (4, 5103005), (5, 4082404), (10, 2041202), (20, 1020601), (79, 258380), (158, 129190), (316, 64595), (395, 51676), (790, 25838), (1580, 12919)]