221760640

素因数分解:

$2^7\times 5^1\times {\mathrm{346501}}^1$

素因数の和:346520

約数の個数: 32

約数和(自身を含む): 530148060

約数和(自身を除く): 308387420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 346501, 693002, 1386004, 1732505, 2772008, 3465010, 5544016, 6930020, 11088032, 13860040, 22176064, 27720080, 44352128, 55440160, 110880320, 221760640]

約数ペア:

[(1, 221760640), (2, 110880320), (4, 55440160), (5, 44352128), (8, 27720080), (10, 22176064), (16, 13860040), (20, 11088032), (32, 6930020), (40, 5544016), (64, 3465010), (80, 2772008), (128, 1732505), (160, 1386004), (320, 693002), (640, 346501)]