20515690520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39453251}}^1$

素因数の和:39453275

約数の個数: 32

約数和(自身を含む): 49711097520

約数和(自身を除く): 29195407000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39453251, 78906502, 157813004, 197266255, 315626008, 394532510, 512892263, 789065020, 1025784526, 1578130040, 2051569052, 2564461315, 4103138104, 5128922630, 10257845260, 20515690520]

約数ペア:

[(1, 20515690520), (2, 10257845260), (4, 5128922630), (5, 4103138104), (8, 2564461315), (10, 2051569052), (13, 1578130040), (20, 1025784526), (26, 789065020), (40, 512892263), (52, 394532510), (65, 315626008), (104, 197266255), (130, 157813004), (260, 78906502), (520, 39453251)]