31978197

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{4349}}^1$

素因数の和:4417

約数の個数: 24

約数和(自身を含む): 49764000

約数和(自身を除く): 17785803

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 4349, 7353, 13047, 39141, 82631, 187007, 247893, 561021, 743679, 1683063, 3553133, 10659399, 31978197]

約数ペア:

[(1, 31978197), (3, 10659399), (9, 3553133), (19, 1683063), (43, 743679), (57, 561021), (129, 247893), (171, 187007), (387, 82631), (817, 39141), (2451, 13047), (4349, 7353)]