642352

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{2113}}^1$

素因数の和:2140

約数の個数: 20

約数和(自身を含む): 1310680

約数和(自身を除く): 668328

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 2113, 4226, 8452, 16904, 33808, 40147, 80294, 160588, 321176, 642352]

約数ペア:

[(1, 642352), (2, 321176), (4, 160588), (8, 80294), (16, 40147), (19, 33808), (38, 16904), (76, 8452), (152, 4226), (304, 2113)]