420578

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:289

約数の個数: 16

約数和(自身を含む): 677376

約数和(自身を除く): 256798

約数列:

[1, 2, 23, 41, 46, 82, 223, 446, 943, 1886, 5129, 9143, 10258, 18286, 210289, 420578]

約数ペア:

[(1, 420578), (2, 210289), (23, 18286), (41, 10258), (46, 9143), (82, 5129), (223, 1886), (446, 943)]