65315440

素因数分解:

$2^4\times 5^1\times {\mathrm{816443}}^1$

素因数の和:816456

約数の個数: 20

約数和(自身を含む): 151858584

約数和(自身を除く): 86543144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 816443, 1632886, 3265772, 4082215, 6531544, 8164430, 13063088, 16328860, 32657720, 65315440]

約数ペア:

[(1, 65315440), (2, 32657720), (4, 16328860), (5, 13063088), (8, 8164430), (10, 6531544), (16, 4082215), (20, 3265772), (40, 1632886), (80, 816443)]