257903152

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1239919}}^1$

素因数の和:1239940

約数の個数: 20

約数和(自身を含む): 538125280

約数和(自身を除く): 280222128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1239919, 2479838, 4959676, 9919352, 16118947, 19838704, 32237894, 64475788, 128951576, 257903152]

約数ペア:

[(1, 257903152), (2, 128951576), (4, 64475788), (8, 32237894), (13, 19838704), (16, 16118947), (26, 9919352), (52, 4959676), (104, 2479838), (208, 1239919)]