208284020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1487743}}^1$

素因数の和:1487759

約数の個数: 24

約数和(自身を含む): 499881984

約数和(自身を除く): 291597964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1487743, 2975486, 5950972, 7438715, 10414201, 14877430, 20828402, 29754860, 41656804, 52071005, 104142010, 208284020]

約数ペア:

[(1, 208284020), (2, 104142010), (4, 52071005), (5, 41656804), (7, 29754860), (10, 20828402), (14, 14877430), (20, 10414201), (28, 7438715), (35, 5950972), (70, 2975486), (140, 1487743)]