21680858

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 35392896

約数和(自身を除く): 13712038

約数列:

[1, 2, 23, 43, 46, 86, 97, 113, 194, 226, 989, 1978, 2231, 2599, 4171, 4462, 4859, 5198, 8342, 9718, 10961, 21922, 95933, 111757, 191866, 223514, 252103, 471323, 504206, 942646, 10840429, 21680858]

約数ペア:

[(1, 21680858), (2, 10840429), (23, 942646), (43, 504206), (46, 471323), (86, 252103), (97, 223514), (113, 191866), (194, 111757), (226, 95933), (989, 21922), (1978, 10961), (2231, 9718), (2599, 8342), (4171, 5198), (4462, 4859)]