21817280

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2351}}^1$

素因数の和:2397

約数の個数: 56

約数和(自身を含む): 53766720

約数和(自身を除く): 31949440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 145, 160, 232, 290, 320, 464, 580, 928, 1160, 1856, 2320, 2351, 4640, 4702, 9280, 9404, 11755, 18808, 23510, 37616, 47020, 68179, 75232, 94040, 136358, 150464, 188080, 272716, 340895, 376160, 545432, 681790, 752320, 1090864, 1363580, 2181728, 2727160, 4363456, 5454320, 10908640, 21817280]

約数ペア:

[(1, 21817280), (2, 10908640), (4, 5454320), (5, 4363456), (8, 2727160), (10, 2181728), (16, 1363580), (20, 1090864), (29, 752320), (32, 681790), (40, 545432), (58, 376160), (64, 340895), (80, 272716), (116, 188080), (145, 150464), (160, 136358), (232, 94040), (290, 75232), (320, 68179), (464, 47020), (580, 37616), (928, 23510), (1160, 18808), (1856, 11755), (2320, 9404), (2351, 9280), (4640, 4702)]