21108760

素因数分解:

$2^3\times 5^1\times {\mathrm{599}}^1\times {\mathrm{881}}^1$

素因数の和:1491

約数の個数: 32

約数和(自身を含む): 47628000

約数和(自身を除く): 26519240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 599, 881, 1198, 1762, 2396, 2995, 3524, 4405, 4792, 5990, 7048, 8810, 11980, 17620, 23960, 35240, 527719, 1055438, 2110876, 2638595, 4221752, 5277190, 10554380, 21108760]

約数ペア:

[(1, 21108760), (2, 10554380), (4, 5277190), (5, 4221752), (8, 2638595), (10, 2110876), (20, 1055438), (40, 527719), (599, 35240), (881, 23960), (1198, 17620), (1762, 11980), (2396, 8810), (2995, 7048), (3524, 5990), (4405, 4792)]