20746984

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1471}}^1$

素因数の和:1561

約数の個数: 32

約数和(自身を含む): 40803840

約数和(自身を除く): 20056856

約数列:

[1, 2, 4, 8, 41, 43, 82, 86, 164, 172, 328, 344, 1471, 1763, 2942, 3526, 5884, 7052, 11768, 14104, 60311, 63253, 120622, 126506, 241244, 253012, 482488, 506024, 2593373, 5186746, 10373492, 20746984]

約数ペア:

[(1, 20746984), (2, 10373492), (4, 5186746), (8, 2593373), (41, 506024), (43, 482488), (82, 253012), (86, 241244), (164, 126506), (172, 120622), (328, 63253), (344, 60311), (1471, 14104), (1763, 11768), (2942, 7052), (3526, 5884)]