20797040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23633}}^1$

素因数の和:23657

約数の個数: 40

約数和(自身を含む): 52751088

約数和(自身を除く): 31954048

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23633, 47266, 94532, 118165, 189064, 236330, 259963, 378128, 472660, 519926, 945320, 1039852, 1299815, 1890640, 2079704, 2599630, 4159408, 5199260, 10398520, 20797040]

約数ペア:

[(1, 20797040), (2, 10398520), (4, 5199260), (5, 4159408), (8, 2599630), (10, 2079704), (11, 1890640), (16, 1299815), (20, 1039852), (22, 945320), (40, 519926), (44, 472660), (55, 378128), (80, 259963), (88, 236330), (110, 189064), (176, 118165), (220, 94532), (440, 47266), (880, 23633)]