20403040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18217}}^1$

素因数の和:18239

約数の個数: 48

約数和(自身を含む): 55091232

約数和(自身を除く): 34688192

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18217, 36434, 72868, 91085, 127519, 145736, 182170, 255038, 291472, 364340, 510076, 582944, 637595, 728680, 1020152, 1275190, 1457360, 2040304, 2550380, 2914720, 4080608, 5100760, 10201520, 20403040]

約数ペア:

[(1, 20403040), (2, 10201520), (4, 5100760), (5, 4080608), (7, 2914720), (8, 2550380), (10, 2040304), (14, 1457360), (16, 1275190), (20, 1020152), (28, 728680), (32, 637595), (35, 582944), (40, 510076), (56, 364340), (70, 291472), (80, 255038), (112, 182170), (140, 145736), (160, 127519), (224, 91085), (280, 72868), (560, 36434), (1120, 18217)]