209000320

素因数分解:

$2^7\times 5^1\times {\mathrm{326563}}^1$

素因数の和:326582

約数の個数: 32

約数和(自身を含む): 499642920

約数和(自身を除く): 290642600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 326563, 653126, 1306252, 1632815, 2612504, 3265630, 5225008, 6531260, 10450016, 13062520, 20900032, 26125040, 41800064, 52250080, 104500160, 209000320]

約数ペア:

[(1, 209000320), (2, 104500160), (4, 52250080), (5, 41800064), (8, 26125040), (10, 20900032), (16, 13062520), (20, 10450016), (32, 6531260), (40, 5225008), (64, 3265630), (80, 2612504), (128, 1632815), (160, 1306252), (320, 653126), (640, 326563)]