20659888

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1811}}^1$

素因数の和:1873

約数の個数: 40

約数和(自身を含む): 43140096

約数和(自身を除く): 22480208

約数列:

[1, 2, 4, 8, 16, 23, 31, 46, 62, 92, 124, 184, 248, 368, 496, 713, 1426, 1811, 2852, 3622, 5704, 7244, 11408, 14488, 28976, 41653, 56141, 83306, 112282, 166612, 224564, 333224, 449128, 666448, 898256, 1291243, 2582486, 5164972, 10329944, 20659888]

約数ペア:

[(1, 20659888), (2, 10329944), (4, 5164972), (8, 2582486), (16, 1291243), (23, 898256), (31, 666448), (46, 449128), (62, 333224), (92, 224564), (124, 166612), (184, 112282), (248, 83306), (368, 56141), (496, 41653), (713, 28976), (1426, 14488), (1811, 11408), (2852, 7244), (3622, 5704)]