248819991

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{89087}}^1$

素因数の和:89123

約数の個数: 24

約数和(自身を含む): 406241280

約数和(自身を除く): 157421289

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 89087, 267261, 623609, 1692653, 1870827, 4365263, 5077959, 11848571, 13095789, 35545713, 82939997, 248819991]

約数ペア:

[(1, 248819991), (3, 82939997), (7, 35545713), (19, 13095789), (21, 11848571), (49, 5077959), (57, 4365263), (133, 1870827), (147, 1692653), (399, 623609), (931, 267261), (2793, 89087)]