20901688

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{311}}^1$

素因数の和:619

約数の個数: 32

約数和(自身を含む): 40734720

約数和(自身を除く): 19833032

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 271, 311, 542, 622, 1084, 1244, 2168, 2488, 8401, 9641, 16802, 19282, 33604, 38564, 67208, 77128, 84281, 168562, 337124, 674248, 2612711, 5225422, 10450844, 20901688]

約数ペア:

[(1, 20901688), (2, 10450844), (4, 5225422), (8, 2612711), (31, 674248), (62, 337124), (124, 168562), (248, 84281), (271, 77128), (311, 67208), (542, 38564), (622, 33604), (1084, 19282), (1244, 16802), (2168, 9641), (2488, 8401)]