7210780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4051}}^1$

素因数の和:4149

約数の個数: 24

約数和(自身を含む): 15316560

約数和(自身を除く): 8105780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 4051, 8102, 16204, 20255, 40510, 81020, 360539, 721078, 1442156, 1802695, 3605390, 7210780]

約数ペア:

[(1, 7210780), (2, 3605390), (4, 1802695), (5, 1442156), (10, 721078), (20, 360539), (89, 81020), (178, 40510), (356, 20255), (445, 16204), (890, 8102), (1780, 4051)]