19661168

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{13807}}^1$

素因数の和:13904

約数の個数: 20

約数和(自身を含む): 38524320

約数和(自身を除く): 18863152

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 13807, 27614, 55228, 110456, 220912, 1228823, 2457646, 4915292, 9830584, 19661168]

約数ペア:

[(1, 19661168), (2, 9830584), (4, 4915292), (8, 2457646), (16, 1228823), (89, 220912), (178, 110456), (356, 55228), (712, 27614), (1424, 13807)]