20997588

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{40693}}^1$

素因数の和:40743

約数の個数: 24

約数和(自身を含む): 50135008

約数和(自身を除く): 29137420

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516, 40693, 81386, 122079, 162772, 244158, 488316, 1749799, 3499598, 5249397, 6999196, 10498794, 20997588]

約数ペア:

[(1, 20997588), (2, 10498794), (3, 6999196), (4, 5249397), (6, 3499598), (12, 1749799), (43, 488316), (86, 244158), (129, 162772), (172, 122079), (258, 81386), (516, 40693)]