221671294

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{19421}}^1$

素因数の和:19875

約数の個数: 16

約数和(自身を含む): 358918560

約数和(自身を除く): 137247266

約数列:

[1, 2, 13, 26, 439, 878, 5707, 11414, 19421, 38842, 252473, 504946, 8525819, 17051638, 110835647, 221671294]

約数ペア:

[(1, 221671294), (2, 110835647), (13, 17051638), (26, 8525819), (439, 504946), (878, 252473), (5707, 38842), (11414, 19421)]