207816640

素因数分解:

$2^6\times 5^1\times {\mathrm{649427}}^1$

素因数の和:649444

約数の個数: 28

約数和(自身を含む): 494864136

約数和(自身を除く): 287047496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 649427, 1298854, 2597708, 3247135, 5195416, 6494270, 10390832, 12988540, 20781664, 25977080, 41563328, 51954160, 103908320, 207816640]

約数ペア:

[(1, 207816640), (2, 103908320), (4, 51954160), (5, 41563328), (8, 25977080), (10, 20781664), (16, 12988540), (20, 10390832), (32, 6494270), (40, 5195416), (64, 3247135), (80, 2597708), (160, 1298854), (320, 649427)]