20791016

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3181}}^1$

素因数の和:3249

約数の個数: 32

約数和(自身を含む): 42002400

約数和(自身を除く): 21211384

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 152, 172, 344, 817, 1634, 3181, 3268, 6362, 6536, 12724, 25448, 60439, 120878, 136783, 241756, 273566, 483512, 547132, 1094264, 2598877, 5197754, 10395508, 20791016]

約数ペア:

[(1, 20791016), (2, 10395508), (4, 5197754), (8, 2598877), (19, 1094264), (38, 547132), (43, 483512), (76, 273566), (86, 241756), (152, 136783), (172, 120878), (344, 60439), (817, 25448), (1634, 12724), (3181, 6536), (3268, 6362)]