18972465

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{40801}}^1$

素因数の和:40840

約数の個数: 16

約数和(自身を含む): 31335936

約数和(自身を除く): 12363471

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 40801, 122403, 204005, 612015, 1264831, 3794493, 6324155, 18972465]

約数ペア:

[(1, 18972465), (3, 6324155), (5, 3794493), (15, 1264831), (31, 612015), (93, 204005), (155, 122403), (465, 40801)]