20889280

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2251}}^1$

素因数の和:2297

約数の個数: 56

約数和(自身を含む): 51480720

約数和(自身を除く): 30591440

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, 2251, 2320, 4502, 4640, 9004, 9280, 11255, 18008, 22510, 36016, 45020, 65279, 72032, 90040, 130558, 144064, 180080, 261116, 326395, 360160, 522232, 652790, 720320, 1044464, 1305580, 2088928, 2611160, 4177856, 5222320, 10444640, 20889280]

約数ペア:

[(1, 20889280), (2, 10444640), (4, 5222320), (5, 4177856), (8, 2611160), (10, 2088928), (16, 1305580), (20, 1044464), (29, 720320), (32, 652790), (40, 522232), (58, 360160), (64, 326395), (80, 261116), (116, 180080), (145, 144064), (160, 130558), (232, 90040), (290, 72032), (320, 65279), (464, 45020), (580, 36016), (928, 22510), (1160, 18008), (1856, 11255), (2251, 9280), (2320, 9004), (4502, 4640)]