2190305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1087}}^1$

素因数の和:1136

約数の個数: 16

約数和(自身を含む): 2924544

約数和(自身を除く): 734239

約数列:

[1, 5, 13, 31, 65, 155, 403, 1087, 2015, 5435, 14131, 33697, 70655, 168485, 438061, 2190305]

約数ペア:

[(1, 2190305), (5, 438061), (13, 168485), (31, 70655), (65, 33697), (155, 14131), (403, 5435), (1087, 2015)]