17991385

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{827}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 22852800

約数和(自身を除く): 4861415

約数列:

[1, 5, 19, 95, 229, 827, 1145, 4135, 4351, 15713, 21755, 78565, 189383, 946915, 3598277, 17991385]

約数ペア:

[(1, 17991385), (5, 3598277), (19, 946915), (95, 189383), (229, 78565), (827, 21755), (1145, 15713), (4135, 4351)]