20018704

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65851}}^1$

素因数の和:65878

約数の個数: 20

約数和(自身を含む): 40828240

約数和(自身を除く): 20809536

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65851, 131702, 263404, 526808, 1053616, 1251169, 2502338, 5004676, 10009352, 20018704]

約数ペア:

[(1, 20018704), (2, 10009352), (4, 5004676), (8, 2502338), (16, 1251169), (19, 1053616), (38, 526808), (76, 263404), (152, 131702), (304, 65851)]