28722440

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1439}}^1$

素因数の和:1949

約数の個数: 32

約数和(自身を含む): 64800000

約数和(自身を除く): 36077560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1439, 1996, 2495, 2878, 3992, 4990, 5756, 7195, 9980, 11512, 14390, 19960, 28780, 57560, 718061, 1436122, 2872244, 3590305, 5744488, 7180610, 14361220, 28722440]

約数ペア:

[(1, 28722440), (2, 14361220), (4, 7180610), (5, 5744488), (8, 3590305), (10, 2872244), (20, 1436122), (40, 718061), (499, 57560), (998, 28780), (1439, 19960), (1996, 14390), (2495, 11512), (2878, 9980), (3992, 7195), (4990, 5756)]