28722920

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{2339}}^1$

素因数の和:2657

約数の個数: 32

約数和(自身を含む): 64864800

約数和(自身を除く): 36141880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 2339, 2456, 3070, 4678, 6140, 9356, 11695, 12280, 18712, 23390, 46780, 93560, 718073, 1436146, 2872292, 3590365, 5744584, 7180730, 14361460, 28722920]

約数ペア:

[(1, 28722920), (2, 14361460), (4, 7180730), (5, 5744584), (8, 3590365), (10, 2872292), (20, 1436146), (40, 718073), (307, 93560), (614, 46780), (1228, 23390), (1535, 18712), (2339, 12280), (2456, 11695), (3070, 9356), (4678, 6140)]