206236480

素因数分解:

$2^6\times 5^1\times {\mathrm{644489}}^1$

素因数の和:644506

約数の個数: 28

約数和(自身を含む): 491101380

約数和(自身を除く): 284864900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 644489, 1288978, 2577956, 3222445, 5155912, 6444890, 10311824, 12889780, 20623648, 25779560, 41247296, 51559120, 103118240, 206236480]

約数ペア:

[(1, 206236480), (2, 103118240), (4, 51559120), (5, 41247296), (8, 25779560), (10, 20623648), (16, 12889780), (20, 10311824), (32, 6444890), (40, 5155912), (64, 3222445), (80, 2577956), (160, 1288978), (320, 644489)]