638551145

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{231779}}^1$

素因数の和:231832

約数の個数: 16

約数和(自身を含む): 834408000

約数和(自身を除く): 195856855

約数列:

[1, 5, 19, 29, 95, 145, 551, 2755, 231779, 1158895, 4403801, 6721591, 22019005, 33607955, 127710229, 638551145]

約数ペア:

[(1, 638551145), (5, 127710229), (19, 33607955), (29, 22019005), (95, 6721591), (145, 4403801), (551, 1158895), (2755, 231779)]