19971400

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{1637}}^1$

素因数の和:1714

約数の個数: 48

約数和(自身を含む): 47223540

約数和(自身を除く): 27252140

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 244, 305, 488, 610, 1220, 1525, 1637, 2440, 3050, 3274, 6100, 6548, 8185, 12200, 13096, 16370, 32740, 40925, 65480, 81850, 99857, 163700, 199714, 327400, 399428, 499285, 798856, 998570, 1997140, 2496425, 3994280, 4992850, 9985700, 19971400]

約数ペア:

[(1, 19971400), (2, 9985700), (4, 4992850), (5, 3994280), (8, 2496425), (10, 1997140), (20, 998570), (25, 798856), (40, 499285), (50, 399428), (61, 327400), (100, 199714), (122, 163700), (200, 99857), (244, 81850), (305, 65480), (488, 40925), (610, 32740), (1220, 16370), (1525, 13096), (1637, 12200), (2440, 8185), (3050, 6548), (3274, 6100)]