31205601

素因数分解:

$3^3\times 7^2\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:355

約数の個数: 48

約数和(自身を含む): 54537600

約数和(自身を除く): 23331999

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 103, 147, 189, 229, 309, 441, 687, 721, 927, 1323, 1603, 2061, 2163, 2781, 4809, 5047, 6183, 6489, 11221, 14427, 15141, 19467, 23587, 33663, 43281, 45423, 70761, 100989, 136269, 165109, 212283, 302967, 495327, 636849, 1155763, 1485981, 3467289, 4457943, 10401867, 31205601]

約数ペア:

[(1, 31205601), (3, 10401867), (7, 4457943), (9, 3467289), (21, 1485981), (27, 1155763), (49, 636849), (63, 495327), (103, 302967), (147, 212283), (189, 165109), (229, 136269), (309, 100989), (441, 70761), (687, 45423), (721, 43281), (927, 33663), (1323, 23587), (1603, 19467), (2061, 15141), (2163, 14427), (2781, 11221), (4809, 6489), (5047, 6183)]