640931199

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{109169}}^1$

素因数の和:109294

約数の個数: 16

約数和(自身を含む): 908294400

約数和(自身を除く): 267363201

約数列:

[1, 3, 19, 57, 103, 309, 1957, 5871, 109169, 327507, 2074211, 6222633, 11244407, 33733221, 213643733, 640931199]

約数ペア:

[(1, 640931199), (3, 213643733), (19, 33733221), (57, 11244407), (103, 6222633), (309, 2074211), (1957, 327507), (5871, 109169)]