20659420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60763}}^1$

素因数の和:60789

約数の個数: 24

約数和(自身を含む): 45937584

約数和(自身を除く): 25278164

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60763, 121526, 243052, 303815, 607630, 1032971, 1215260, 2065942, 4131884, 5164855, 10329710, 20659420]

約数ペア:

[(1, 20659420), (2, 10329710), (4, 5164855), (5, 4131884), (10, 2065942), (17, 1215260), (20, 1032971), (34, 607630), (68, 303815), (85, 243052), (170, 121526), (340, 60763)]