19946564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{4159}}^1$

素因数の和:4283

約数の個数: 24

約数和(自身を含む): 38438400

約数和(自身を除く): 18491836

約数列:

[1, 2, 4, 11, 22, 44, 109, 218, 436, 1199, 2398, 4159, 4796, 8318, 16636, 45749, 91498, 182996, 453331, 906662, 1813324, 4986641, 9973282, 19946564]

約数ペア:

[(1, 19946564), (2, 9973282), (4, 4986641), (11, 1813324), (22, 906662), (44, 453331), (109, 182996), (218, 91498), (436, 45749), (1199, 16636), (2398, 8318), (4159, 4796)]