19982420

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5231}}^1$

素因数の和:5431

約数の個数: 24

約数和(自身を含む): 42190848

約数和(自身を除く): 22208428

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5231, 10462, 20924, 26155, 52310, 104620, 999121, 1998242, 3996484, 4995605, 9991210, 19982420]

約数ペア:

[(1, 19982420), (2, 9991210), (4, 4995605), (5, 3996484), (10, 1998242), (20, 999121), (191, 104620), (382, 52310), (764, 26155), (955, 20924), (1910, 10462), (3820, 5231)]