256217865

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{397237}}^1$

素因数の和:397288

約数の個数: 16

約数和(自身を含む): 419483328

約数和(自身を除く): 163265463

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 397237, 1191711, 1986185, 5958555, 17081191, 51243573, 85405955, 256217865]

約数ペア:

[(1, 256217865), (3, 85405955), (5, 51243573), (15, 17081191), (43, 5958555), (129, 1986185), (215, 1191711), (645, 397237)]