20400894

素因数分解:

$2^1\times 3^2\times {\mathrm{157}}^1\times {\mathrm{7219}}^1$

素因数の和:7384

約数の個数: 24

約数和(自身を含む): 44489640

約数和(自身を除く): 24088746

約数列:

[1, 2, 3, 6, 9, 18, 157, 314, 471, 942, 1413, 2826, 7219, 14438, 21657, 43314, 64971, 129942, 1133383, 2266766, 3400149, 6800298, 10200447, 20400894]

約数ペア:

[(1, 20400894), (2, 10200447), (3, 6800298), (6, 3400149), (9, 2266766), (18, 1133383), (157, 129942), (314, 64971), (471, 43314), (942, 21657), (1413, 14438), (2826, 7219)]