217977284

素因数分解:

$2^2\times 7^2\times {\mathrm{1112129}}^1$

素因数の和:1112147

約数の個数: 18

約数和(自身を含む): 443739870

約数和(自身を除く): 225762586

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 1112129, 2224258, 4448516, 7784903, 15569806, 31139612, 54494321, 108988642, 217977284]

約数ペア:

[(1, 217977284), (2, 108988642), (4, 54494321), (7, 31139612), (14, 15569806), (28, 7784903), (49, 4448516), (98, 2224258), (196, 1112129)]