680804920

素因数分解:

$2^3\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{13627}}^1$

素因数の和:14887

約数の個数: 32

約数和(自身を含む): 1533150000

約数和(自身を除く): 852345080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1249, 2498, 4996, 6245, 9992, 12490, 13627, 24980, 27254, 49960, 54508, 68135, 109016, 136270, 272540, 545080, 17020123, 34040246, 68080492, 85100615, 136160984, 170201230, 340402460, 680804920]

約数ペア:

[(1, 680804920), (2, 340402460), (4, 170201230), (5, 136160984), (8, 85100615), (10, 68080492), (20, 34040246), (40, 17020123), (1249, 545080), (2498, 272540), (4996, 136270), (6245, 109016), (9992, 68135), (12490, 54508), (13627, 49960), (24980, 27254)]