3988551

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 6340224

約数和(自身を除く): 2351673

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 631, 903, 1893, 2107, 4417, 6321, 13251, 27133, 30919, 81399, 92757, 189931, 569793, 1329517, 3988551]

約数ペア:

[(1, 3988551), (3, 1329517), (7, 569793), (21, 189931), (43, 92757), (49, 81399), (129, 30919), (147, 27133), (301, 13251), (631, 6321), (903, 4417), (1893, 2107)]