20490085

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7603}}^1$

素因数の和:7633

約数の個数: 24

約数和(自身を含む): 31206816

約数和(自身を除く): 10716731

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 7603, 38015, 53221, 83633, 266105, 372547, 418165, 585431, 1862735, 2927155, 4098017, 20490085]

約数ペア:

[(1, 20490085), (5, 4098017), (7, 2927155), (11, 1862735), (35, 585431), (49, 418165), (55, 372547), (77, 266105), (245, 83633), (385, 53221), (539, 38015), (2695, 7603)]