12270920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2207}}^1$

素因数の和:2357

約数の個数: 32

約数和(自身を含む): 27820800

約数和(自身を除く): 15549880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2207, 2780, 4414, 5560, 8828, 11035, 17656, 22070, 44140, 88280, 306773, 613546, 1227092, 1533865, 2454184, 3067730, 6135460, 12270920]

約数ペア:

[(1, 12270920), (2, 6135460), (4, 3067730), (5, 2454184), (8, 1533865), (10, 1227092), (20, 613546), (40, 306773), (139, 88280), (278, 44140), (556, 22070), (695, 17656), (1112, 11035), (1390, 8828), (2207, 5560), (2780, 4414)]