138928640

素因数分解:

$2^9\times 5^1\times {\mathrm{54269}}^1$

素因数の和:54292

約数の個数: 40

約数和(自身を含む): 333109260

約数和(自身を除く): 194180620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 54269, 108538, 217076, 271345, 434152, 542690, 868304, 1085380, 1736608, 2170760, 3473216, 4341520, 6946432, 8683040, 13892864, 17366080, 27785728, 34732160, 69464320, 138928640]

約数ペア:

[(1, 138928640), (2, 69464320), (4, 34732160), (5, 27785728), (8, 17366080), (10, 13892864), (16, 8683040), (20, 6946432), (32, 4341520), (40, 3473216), (64, 2170760), (80, 1736608), (128, 1085380), (160, 868304), (256, 542690), (320, 434152), (512, 271345), (640, 217076), (1280, 108538), (2560, 54269)]