208997440

素因数分解:

$2^6\times 5^1\times {\mathrm{653117}}^1$

素因数の和:653134

約数の個数: 28

約数和(自身を含む): 497675916

約数和(自身を除く): 288678476

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 653117, 1306234, 2612468, 3265585, 5224936, 6531170, 10449872, 13062340, 20899744, 26124680, 41799488, 52249360, 104498720, 208997440]

約数ペア:

[(1, 208997440), (2, 104498720), (4, 52249360), (5, 41799488), (8, 26124680), (10, 20899744), (16, 13062340), (20, 10449872), (32, 6531170), (40, 5224936), (64, 3265585), (80, 2612468), (160, 1306234), (320, 653117)]