18656991

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:535

約数の個数: 24

約数和(自身を含む): 27920880

約数和(自身を除く): 9263889

約数列:

[1, 3, 9, 37, 111, 179, 313, 333, 537, 939, 1611, 2817, 6623, 11581, 19869, 34743, 56027, 59607, 104229, 168081, 504243, 2072999, 6218997, 18656991]

約数ペア:

[(1, 18656991), (3, 6218997), (9, 2072999), (37, 504243), (111, 168081), (179, 104229), (313, 59607), (333, 56027), (537, 34743), (939, 19869), (1611, 11581), (2817, 6623)]