19972816

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{3209}}^1$

素因数の和:3606

約数の個数: 20

約数和(自身を含む): 38808900

約数和(自身を除く): 18836084

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 3209, 6224, 6418, 12836, 25672, 51344, 1248301, 2496602, 4993204, 9986408, 19972816]

約数ペア:

[(1, 19972816), (2, 9986408), (4, 4993204), (8, 2496602), (16, 1248301), (389, 51344), (778, 25672), (1556, 12836), (3112, 6418), (3209, 6224)]