19818805

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{911}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 25171200

約数和(自身を除く): 5352395

約数列:

[1, 5, 19, 95, 229, 911, 1145, 4351, 4555, 17309, 21755, 86545, 208619, 1043095, 3963761, 19818805]

約数ペア:

[(1, 19818805), (5, 3963761), (19, 1043095), (95, 208619), (229, 86545), (911, 21755), (1145, 17309), (4351, 4555)]