221511238

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{463}}^1\times {\mathrm{18401}}^1$

素因数の和:18879

約数の個数: 16

約数和(自身を含む): 358618176

約数和(自身を除く): 137106938

約数列:

[1, 2, 13, 26, 463, 926, 6019, 12038, 18401, 36802, 239213, 478426, 8519663, 17039326, 110755619, 221511238]

約数ペア:

[(1, 221511238), (2, 110755619), (13, 17039326), (26, 8519663), (463, 478426), (926, 239213), (6019, 36802), (12038, 18401)]