66978820

素因数分解:

$2^2\times 5^1\times {\mathrm{1319}}^1\times {\mathrm{2539}}^1$

素因数の和:3867

約数の個数: 24

約数和(自身を含む): 140817600

約数和(自身を除く): 73838780

約数列:

[1, 2, 4, 5, 10, 20, 1319, 2539, 2638, 5078, 5276, 6595, 10156, 12695, 13190, 25390, 26380, 50780, 3348941, 6697882, 13395764, 16744705, 33489410, 66978820]

約数ペア:

[(1, 66978820), (2, 33489410), (4, 16744705), (5, 13395764), (10, 6697882), (20, 3348941), (1319, 50780), (2539, 26380), (2638, 25390), (5078, 13190), (5276, 12695), (6595, 10156)]