1390240131

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{642737}}^1$

素因数の和:642850

約数の個数: 16

約数和(自身を含む): 2139032064

約数和(自身を除く): 748791933

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 642737, 1928211, 4499159, 13497477, 66201911, 198605733, 463413377, 1390240131]

約数ペア:

[(1, 1390240131), (3, 463413377), (7, 198605733), (21, 66201911), (103, 13497477), (309, 4499159), (721, 1928211), (2163, 642737)]