639028481

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{1447}}^1$

素因数の和:1701

約数の個数: 32

約数和(自身を含む): 825151488

約数和(自身を除く): 186123007

約数列:

[1, 7, 13, 23, 91, 161, 211, 299, 1447, 1477, 2093, 2743, 4853, 10129, 18811, 19201, 33281, 33971, 63089, 131677, 232967, 305317, 432653, 441623, 2137219, 3028571, 3969121, 7022291, 27783847, 49156037, 91289783, 639028481]

約数ペア:

[(1, 639028481), (7, 91289783), (13, 49156037), (23, 27783847), (91, 7022291), (161, 3969121), (211, 3028571), (299, 2137219), (1447, 441623), (1477, 432653), (2093, 305317), (2743, 232967), (4853, 131677), (10129, 63089), (18811, 33971), (19201, 33281)]