389205

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^2$

素因数の和:79

約数の個数: 30

約数和(自身を含む): 720918

約数和(自身を除く): 331713

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 961, 1395, 2511, 2883, 4185, 4805, 8649, 12555, 14415, 25947, 43245, 77841, 129735, 389205]

約数ペア:

[(1, 389205), (3, 129735), (5, 77841), (9, 43245), (15, 25947), (27, 14415), (31, 12555), (45, 8649), (81, 4805), (93, 4185), (135, 2883), (155, 2511), (279, 1395), (405, 961), (465, 837)]