21573560

素因数分解:

$2^3\times 5^1\times {\mathrm{539339}}^1$

素因数の和:539350

約数の個数: 16

約数和(自身を含む): 48540600

約数和(自身を除く): 26967040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 539339, 1078678, 2157356, 2696695, 4314712, 5393390, 10786780, 21573560]

約数ペア:

[(1, 21573560), (2, 10786780), (4, 5393390), (5, 4314712), (8, 2696695), (10, 2157356), (20, 1078678), (40, 539339)]