221440317

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{293}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 375943680

約数和(自身を除く): 154503363

約数列:

[1, 3, 7, 17, 21, 29, 51, 73, 87, 119, 203, 219, 293, 357, 493, 511, 609, 879, 1241, 1479, 1533, 2051, 2117, 3451, 3723, 4981, 6153, 6351, 8497, 8687, 10353, 14819, 14943, 21389, 25491, 26061, 34867, 35989, 44457, 59479, 64167, 104601, 107967, 144449, 149723, 178437, 251923, 363613, 433347, 449169, 620281, 755769, 1011143, 1090839, 1860843, 2545291, 3033429, 4341967, 7635873, 10544777, 13025901, 31634331, 73813439, 221440317]

約数ペア:

[(1, 221440317), (3, 73813439), (7, 31634331), (17, 13025901), (21, 10544777), (29, 7635873), (51, 4341967), (73, 3033429), (87, 2545291), (119, 1860843), (203, 1090839), (219, 1011143), (293, 755769), (357, 620281), (493, 449169), (511, 433347), (609, 363613), (879, 251923), (1241, 178437), (1479, 149723), (1533, 144449), (2051, 107967), (2117, 104601), (3451, 64167), (3723, 59479), (4981, 44457), (6153, 35989), (6351, 34867), (8497, 26061), (8687, 25491), (10353, 21389), (14819, 14943)]