19781646

素因数分解:

$2^1\times 3^1\times {\mathrm{139}}^1\times {\mathrm{23719}}^1$

素因数の和:23863

約数の個数: 16

約数和(自身を含む): 39849600

約数和(自身を除く): 20067954

約数列:

[1, 2, 3, 6, 139, 278, 417, 834, 23719, 47438, 71157, 142314, 3296941, 6593882, 9890823, 19781646]

約数ペア:

[(1, 19781646), (2, 9890823), (3, 6593882), (6, 3296941), (139, 142314), (278, 71157), (417, 47438), (834, 23719)]