221345908

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{111341}}^1$

素因数の和:111423

約数の個数: 24

約数和(自身を含む): 448930944

約数和(自身を除く): 227585036

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 111341, 222682, 445364, 779387, 1558774, 3117548, 7905211, 15810422, 31620844, 55336477, 110672954, 221345908]

約数ペア:

[(1, 221345908), (2, 110672954), (4, 55336477), (7, 31620844), (14, 15810422), (28, 7905211), (71, 3117548), (142, 1558774), (284, 779387), (497, 445364), (994, 222682), (1988, 111341)]