21786460

素因数分解:

$2^2\times 5^1\times {\mathrm{757}}^1\times {\mathrm{1439}}^1$

素因数の和:2205

約数の個数: 24

約数和(自身を含む): 45843840

約数和(自身を除く): 24057380

約数列:

[1, 2, 4, 5, 10, 20, 757, 1439, 1514, 2878, 3028, 3785, 5756, 7195, 7570, 14390, 15140, 28780, 1089323, 2178646, 4357292, 5446615, 10893230, 21786460]

約数ペア:

[(1, 21786460), (2, 10893230), (4, 5446615), (5, 4357292), (10, 2178646), (20, 1089323), (757, 28780), (1439, 15140), (1514, 14390), (2878, 7570), (3028, 7195), (3785, 5756)]