20017613

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 26542080

約数和(自身を除く): 6524467

約数列:

[1, 7, 11, 23, 77, 89, 127, 161, 253, 623, 889, 979, 1397, 1771, 2047, 2921, 6853, 9779, 11303, 14329, 20447, 22517, 32131, 79121, 124333, 157619, 224917, 259969, 870331, 1819783, 2859659, 20017613]

約数ペア:

[(1, 20017613), (7, 2859659), (11, 1819783), (23, 870331), (77, 259969), (89, 224917), (127, 157619), (161, 124333), (253, 79121), (623, 32131), (889, 22517), (979, 20447), (1397, 14329), (1771, 11303), (2047, 9779), (2921, 6853)]