28220529

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{13381}}^1$

素因数の和:13440

約数の個数: 16

約数和(自身を含む): 40681280

約数和(自身を除く): 12460751

約数列:

[1, 3, 19, 37, 57, 111, 703, 2109, 13381, 40143, 254239, 495097, 762717, 1485291, 9406843, 28220529]

約数ペア:

[(1, 28220529), (3, 9406843), (19, 1485291), (37, 762717), (57, 495097), (111, 254239), (703, 40143), (2109, 13381)]