20191976

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 46068480

約数和(自身を除く): 25876504

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 61, 92, 122, 161, 184, 244, 257, 322, 427, 488, 514, 644, 854, 1028, 1288, 1403, 1708, 1799, 2056, 2806, 3416, 3598, 5612, 5911, 7196, 9821, 11224, 11822, 14392, 15677, 19642, 23644, 31354, 39284, 41377, 47288, 62708, 78568, 82754, 109739, 125416, 165508, 219478, 331016, 360571, 438956, 721142, 877912, 1442284, 2523997, 2884568, 5047994, 10095988, 20191976]

約数ペア:

[(1, 20191976), (2, 10095988), (4, 5047994), (7, 2884568), (8, 2523997), (14, 1442284), (23, 877912), (28, 721142), (46, 438956), (56, 360571), (61, 331016), (92, 219478), (122, 165508), (161, 125416), (184, 109739), (244, 82754), (257, 78568), (322, 62708), (427, 47288), (488, 41377), (514, 39284), (644, 31354), (854, 23644), (1028, 19642), (1288, 15677), (1403, 14392), (1708, 11822), (1799, 11224), (2056, 9821), (2806, 7196), (3416, 5911), (3598, 5612)]