21006080

素因数分解:

$2^8\times 5^1\times {\mathrm{16411}}^1$

素因数の和:16432

約数の個数: 36

約数和(自身を含む): 50319192

約数和(自身を除く): 29313112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16411, 32822, 65644, 82055, 131288, 164110, 262576, 328220, 525152, 656440, 1050304, 1312880, 2100608, 2625760, 4201216, 5251520, 10503040, 21006080]

約数ペア:

[(1, 21006080), (2, 10503040), (4, 5251520), (5, 4201216), (8, 2625760), (10, 2100608), (16, 1312880), (20, 1050304), (32, 656440), (40, 525152), (64, 328220), (80, 262576), (128, 164110), (160, 131288), (256, 82055), (320, 65644), (640, 32822), (1280, 16411)]