20531637

素因数分解:

$3^4\times 7^3\times {\mathrm{739}}^1$

素因数の和:772

約数の個数: 40

約数和(自身を含む): 35816000

約数和(自身を除く): 15284363

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 343, 441, 567, 739, 1029, 1323, 2217, 3087, 3969, 5173, 6651, 9261, 15519, 19953, 27783, 36211, 46557, 59859, 108633, 139671, 253477, 325899, 419013, 760431, 977697, 2281293, 2933091, 6843879, 20531637]

約数ペア:

[(1, 20531637), (3, 6843879), (7, 2933091), (9, 2281293), (21, 977697), (27, 760431), (49, 419013), (63, 325899), (81, 253477), (147, 139671), (189, 108633), (343, 59859), (441, 46557), (567, 36211), (739, 27783), (1029, 19953), (1323, 15519), (2217, 9261), (3087, 6651), (3969, 5173)]