1231540

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{443}}^1$

素因数の和:591

約数の個数: 24

約数和(自身を含む): 2610720

約数和(自身を除く): 1379180

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 443, 556, 695, 886, 1390, 1772, 2215, 2780, 4430, 8860, 61577, 123154, 246308, 307885, 615770, 1231540]

約数ペア:

[(1, 1231540), (2, 615770), (4, 307885), (5, 246308), (10, 123154), (20, 61577), (139, 8860), (278, 4430), (443, 2780), (556, 2215), (695, 1772), (886, 1390)]