257310315

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{248609}}^1$

素因数の和:248643

約数の個数: 24

約数和(自身を含む): 465397920

約数和(自身を除く): 208087605

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 248609, 745827, 1243045, 2237481, 3729135, 5718007, 11187405, 17154021, 28590035, 51462063, 85770105, 257310315]

約数ペア:

[(1, 257310315), (3, 85770105), (5, 51462063), (9, 28590035), (15, 17154021), (23, 11187405), (45, 5718007), (69, 3729135), (115, 2237481), (207, 1243045), (345, 745827), (1035, 248609)]