28457260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109451}}^1$

素因数の和:109473

約数の個数: 24

約数和(自身を含む): 64357776

約数和(自身を除く): 35900516

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109451, 218902, 437804, 547255, 1094510, 1422863, 2189020, 2845726, 5691452, 7114315, 14228630, 28457260]

約数ペア:

[(1, 28457260), (2, 14228630), (4, 7114315), (5, 5691452), (10, 2845726), (13, 2189020), (20, 1422863), (26, 1094510), (52, 547255), (65, 437804), (130, 218902), (260, 109451)]