278317285

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{76147}}^1$

素因数の和:76212

約数の個数: 16

約数和(自身を含む): 361855296

約数和(自身を除く): 83538011

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 76147, 380735, 1294499, 3274321, 6472495, 16371605, 55663457, 278317285]

約数ペア:

[(1, 278317285), (5, 55663457), (17, 16371605), (43, 6472495), (85, 3274321), (215, 1294499), (731, 380735), (3655, 76147)]