28139420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82763}}^1$

素因数の和:82789

約数の個数: 24

約数和(自身を含む): 62569584

約数和(自身を除く): 34430164

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 82763, 165526, 331052, 413815, 827630, 1406971, 1655260, 2813942, 5627884, 7034855, 14069710, 28139420]

約数ペア:

[(1, 28139420), (2, 14069710), (4, 7034855), (5, 5627884), (10, 2813942), (17, 1655260), (20, 1406971), (34, 827630), (68, 413815), (85, 331052), (170, 165526), (340, 82763)]