20520738

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:208

約数の個数: 96

約数和(自身を含む): 54302976

約数和(自身を除く): 33782238

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 23, 42, 46, 63, 69, 73, 97, 126, 138, 146, 161, 194, 207, 219, 291, 322, 414, 438, 483, 511, 582, 657, 679, 873, 966, 1022, 1314, 1358, 1449, 1533, 1679, 1746, 2037, 2231, 2898, 3066, 3358, 4074, 4462, 4599, 5037, 6111, 6693, 7081, 9198, 10074, 11753, 12222, 13386, 14162, 15111, 15617, 20079, 21243, 23506, 30222, 31234, 35259, 40158, 42486, 46851, 49567, 63729, 70518, 93702, 99134, 105777, 127458, 140553, 148701, 162863, 211554, 281106, 297402, 325726, 446103, 488589, 892206, 977178, 1140041, 1465767, 2280082, 2931534, 3420123, 6840246, 10260369, 20520738]

約数ペア:

[(1, 20520738), (2, 10260369), (3, 6840246), (6, 3420123), (7, 2931534), (9, 2280082), (14, 1465767), (18, 1140041), (21, 977178), (23, 892206), (42, 488589), (46, 446103), (63, 325726), (69, 297402), (73, 281106), (97, 211554), (126, 162863), (138, 148701), (146, 140553), (161, 127458), (194, 105777), (207, 99134), (219, 93702), (291, 70518), (322, 63729), (414, 49567), (438, 46851), (483, 42486), (511, 40158), (582, 35259), (657, 31234), (679, 30222), (873, 23506), (966, 21243), (1022, 20079), (1314, 15617), (1358, 15111), (1449, 14162), (1533, 13386), (1679, 12222), (1746, 11753), (2037, 10074), (2231, 9198), (2898, 7081), (3066, 6693), (3358, 6111), (4074, 5037), (4462, 4599)]