20280380

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5309}}^1$

素因数の和:5509

約数の個数: 24

約数和(自身を含む): 42819840

約数和(自身を除く): 22539460

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5309, 10618, 21236, 26545, 53090, 106180, 1014019, 2028038, 4056076, 5070095, 10140190, 20280380]

約数ペア:

[(1, 20280380), (2, 10140190), (4, 5070095), (5, 4056076), (10, 2028038), (20, 1014019), (191, 106180), (382, 53090), (764, 26545), (955, 21236), (1910, 10618), (3820, 5309)]