20678548

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{4159}}^1$

素因数の和:4287

約数の個数: 24

約数和(自身を含む): 39836160

約数和(自身を除く): 19157612

約数列:

[1, 2, 4, 11, 22, 44, 113, 226, 452, 1243, 2486, 4159, 4972, 8318, 16636, 45749, 91498, 182996, 469967, 939934, 1879868, 5169637, 10339274, 20678548]

約数ペア:

[(1, 20678548), (2, 10339274), (4, 5169637), (11, 1879868), (22, 939934), (44, 469967), (113, 182996), (226, 91498), (452, 45749), (1243, 16636), (2486, 8318), (4159, 4972)]