18642455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{16871}}^1$

素因数の和:16906

約数の個数: 16

約数和(自身を含む): 25510464

約数和(自身を除く): 6868009

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 16871, 84355, 219323, 286807, 1096615, 1434035, 3728491, 18642455]

約数ペア:

[(1, 18642455), (5, 3728491), (13, 1434035), (17, 1096615), (65, 286807), (85, 219323), (221, 84355), (1105, 16871)]