20395221

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12613}}^1$

素因数の和:12641

約数の個数: 24

約数和(自身を含む): 34511904

約数和(自身を除く): 14116683

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12613, 37839, 88291, 138743, 264873, 416229, 618037, 971201, 1854111, 2913603, 6798407, 20395221]

約数ペア:

[(1, 20395221), (3, 6798407), (7, 2913603), (11, 1854111), (21, 971201), (33, 618037), (49, 416229), (77, 264873), (147, 138743), (231, 88291), (539, 37839), (1617, 12613)]