20384343

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2719}}^1$

素因数の和:2756

約数の個数: 36

約数和(自身を含む): 36279360

約数和(自身を除く): 15895017

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2719, 7497, 8157, 19033, 24471, 46223, 57099, 133231, 138669, 171297, 323561, 399693, 416007, 970683, 1199079, 2264927, 2912049, 6794781, 20384343]

約数ペア:

[(1, 20384343), (3, 6794781), (7, 2912049), (9, 2264927), (17, 1199079), (21, 970683), (49, 416007), (51, 399693), (63, 323561), (119, 171297), (147, 138669), (153, 133231), (357, 57099), (441, 46223), (833, 24471), (1071, 19033), (2499, 8157), (2719, 7497)]