28008800

素因数分解:

$2^5\times 5^2\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:400

約数の個数: 72

約数和(自身を含む): 69120576

約数和(自身を除く): 41111776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 157, 160, 200, 223, 314, 400, 446, 628, 785, 800, 892, 1115, 1256, 1570, 1784, 2230, 2512, 3140, 3568, 3925, 4460, 5024, 5575, 6280, 7136, 7850, 8920, 11150, 12560, 15700, 17840, 22300, 25120, 31400, 35011, 35680, 44600, 62800, 70022, 89200, 125600, 140044, 175055, 178400, 280088, 350110, 560176, 700220, 875275, 1120352, 1400440, 1750550, 2800880, 3501100, 5601760, 7002200, 14004400, 28008800]

約数ペア:

[(1, 28008800), (2, 14004400), (4, 7002200), (5, 5601760), (8, 3501100), (10, 2800880), (16, 1750550), (20, 1400440), (25, 1120352), (32, 875275), (40, 700220), (50, 560176), (80, 350110), (100, 280088), (157, 178400), (160, 175055), (200, 140044), (223, 125600), (314, 89200), (400, 70022), (446, 62800), (628, 44600), (785, 35680), (800, 35011), (892, 31400), (1115, 25120), (1256, 22300), (1570, 17840), (1784, 15700), (2230, 12560), (2512, 11150), (3140, 8920), (3568, 7850), (3925, 7136), (4460, 6280), (5024, 5575)]