12131920

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1091}}^1$

素因数の和:1243

約数の個数: 40

約数和(自身を含む): 28435680

約数和(自身を除く): 16303760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1091, 1112, 1390, 2182, 2224, 2780, 4364, 5455, 5560, 8728, 10910, 11120, 17456, 21820, 43640, 87280, 151649, 303298, 606596, 758245, 1213192, 1516490, 2426384, 3032980, 6065960, 12131920]

約数ペア:

[(1, 12131920), (2, 6065960), (4, 3032980), (5, 2426384), (8, 1516490), (10, 1213192), (16, 758245), (20, 606596), (40, 303298), (80, 151649), (139, 87280), (278, 43640), (556, 21820), (695, 17456), (1091, 11120), (1112, 10910), (1390, 8728), (2182, 5560), (2224, 5455), (2780, 4364)]