21776000

素因数分解:

$2^7\times 5^3\times {\mathrm{1361}}^1$

素因数の和:1390

約数の個数: 64

約数和(自身を含む): 54180360

約数和(自身を除く): 32404360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1361, 1600, 2000, 2722, 3200, 4000, 5444, 6805, 8000, 10888, 13610, 16000, 21776, 27220, 34025, 43552, 54440, 68050, 87104, 108880, 136100, 170125, 174208, 217760, 272200, 340250, 435520, 544400, 680500, 871040, 1088800, 1361000, 2177600, 2722000, 4355200, 5444000, 10888000, 21776000]

約数ペア:

[(1, 21776000), (2, 10888000), (4, 5444000), (5, 4355200), (8, 2722000), (10, 2177600), (16, 1361000), (20, 1088800), (25, 871040), (32, 680500), (40, 544400), (50, 435520), (64, 340250), (80, 272200), (100, 217760), (125, 174208), (128, 170125), (160, 136100), (200, 108880), (250, 87104), (320, 68050), (400, 54440), (500, 43552), (640, 34025), (800, 27220), (1000, 21776), (1361, 16000), (1600, 13610), (2000, 10888), (2722, 8000), (3200, 6805), (4000, 5444)]