28564540

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13103}}^1$

素因数の和:13221

約数の個数: 24

約数和(自身を含む): 60540480

約数和(自身を除く): 31975940

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 13103, 26206, 52412, 65515, 131030, 262060, 1428227, 2856454, 5712908, 7141135, 14282270, 28564540]

約数ペア:

[(1, 28564540), (2, 14282270), (4, 7141135), (5, 5712908), (10, 2856454), (20, 1428227), (109, 262060), (218, 131030), (436, 65515), (545, 52412), (1090, 26206), (2180, 13103)]