20865418

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{367}}^1$

素因数の和:538

約数の個数: 32

約数和(自身を含む): 37306368

約数和(自身を除く): 16440950

約数列:

[1, 2, 7, 14, 31, 62, 131, 217, 262, 367, 434, 734, 917, 1834, 2569, 4061, 5138, 8122, 11377, 22754, 28427, 48077, 56854, 79639, 96154, 159278, 336539, 673078, 1490387, 2980774, 10432709, 20865418]

約数ペア:

[(1, 20865418), (2, 10432709), (7, 2980774), (14, 1490387), (31, 673078), (62, 336539), (131, 159278), (217, 96154), (262, 79639), (367, 56854), (434, 48077), (734, 28427), (917, 22754), (1834, 11377), (2569, 8122), (4061, 5138)]