21851560

素因数分解:

$2^3\times 5^1\times {\mathrm{546289}}^1$

素因数の和:546300

約数の個数: 16

約数和(自身を含む): 49166100

約数和(自身を除く): 27314540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 546289, 1092578, 2185156, 2731445, 4370312, 5462890, 10925780, 21851560]

約数ペア:

[(1, 21851560), (2, 10925780), (4, 5462890), (5, 4370312), (8, 2731445), (10, 2185156), (20, 1092578), (40, 546289)]