21251060080

素因数分解:

$2^4\times 5^1\times {\mathrm{1543}}^1\times {\mathrm{172157}}^1$

素因数の和:173713

約数の個数: 40

約数和(自身を含む): 49441023072

約数和(自身を除く): 28189962992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1543, 3086, 6172, 7715, 12344, 15430, 24688, 30860, 61720, 123440, 172157, 344314, 688628, 860785, 1377256, 1721570, 2754512, 3443140, 6886280, 13772560, 265638251, 531276502, 1062553004, 1328191255, 2125106008, 2656382510, 4250212016, 5312765020, 10625530040, 21251060080]

約数ペア:

[(1, 21251060080), (2, 10625530040), (4, 5312765020), (5, 4250212016), (8, 2656382510), (10, 2125106008), (16, 1328191255), (20, 1062553004), (40, 531276502), (80, 265638251), (1543, 13772560), (3086, 6886280), (6172, 3443140), (7715, 2754512), (12344, 1721570), (15430, 1377256), (24688, 860785), (30860, 688628), (61720, 344314), (123440, 172157)]