21000492005

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{2639911}}^1$

素因数の和:2639996

約数の個数: 16

約数和(自身を含む): 26483597184

約数和(自身を除く): 5483105179

約数列:

[1, 5, 37, 43, 185, 215, 1591, 7955, 2639911, 13199555, 97676707, 113516173, 488383535, 567580865, 4200098401, 21000492005]

約数ペア:

[(1, 21000492005), (5, 4200098401), (37, 567580865), (43, 488383535), (185, 113516173), (215, 97676707), (1591, 13199555), (7955, 2639911)]