18987764

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{1091}}^1$

素因数の和:1343

約数の個数: 24

約数和(自身を含む): 35162400

約数和(自身を除く): 16174636

約数列:

[1, 2, 4, 19, 38, 76, 229, 458, 916, 1091, 2182, 4351, 4364, 8702, 17404, 20729, 41458, 82916, 249839, 499678, 999356, 4746941, 9493882, 18987764]

約数ペア:

[(1, 18987764), (2, 9493882), (4, 4746941), (19, 999356), (38, 499678), (76, 249839), (229, 82916), (458, 41458), (916, 20729), (1091, 17404), (2182, 8702), (4351, 4364)]