21570395

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:515

約数の個数: 32

約数和(自身を含む): 32555520

約数和(自身を除く): 10985125

約数列:

[1, 5, 7, 11, 35, 55, 77, 179, 313, 385, 895, 1253, 1565, 1969, 2191, 3443, 6265, 9845, 10955, 13783, 17215, 24101, 56027, 68915, 120505, 280135, 392189, 616297, 1960945, 3081485, 4314079, 21570395]

約数ペア:

[(1, 21570395), (5, 4314079), (7, 3081485), (11, 1960945), (35, 616297), (55, 392189), (77, 280135), (179, 120505), (313, 68915), (385, 56027), (895, 24101), (1253, 17215), (1565, 13783), (1969, 10955), (2191, 9845), (3443, 6265)]