20012223

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2113}}^1$

素因数の和:2175

約数の個数: 32

約数和(自身を含む): 34094592

約数和(自身を除く): 14082369

約数列:

[1, 3, 7, 11, 21, 33, 41, 77, 123, 231, 287, 451, 861, 1353, 2113, 3157, 6339, 9471, 14791, 23243, 44373, 69729, 86633, 162701, 259899, 488103, 606431, 952963, 1819293, 2858889, 6670741, 20012223]

約数ペア:

[(1, 20012223), (3, 6670741), (7, 2858889), (11, 1819293), (21, 952963), (33, 606431), (41, 488103), (77, 259899), (123, 162701), (231, 86633), (287, 69729), (451, 44373), (861, 23243), (1353, 14791), (2113, 9471), (3157, 6339)]