261663983

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{20173}}^1$

素因数の和:20306

約数の個数: 16

約数和(自身を含む): 319556160

約数和(自身を除く): 57892177

約数列:

[1, 7, 17, 109, 119, 763, 1853, 12971, 20173, 141211, 342941, 2198857, 2400587, 15391999, 37380569, 261663983]

約数ペア:

[(1, 261663983), (7, 37380569), (17, 15391999), (109, 2400587), (119, 2198857), (763, 342941), (1853, 141211), (12971, 20173)]