21563577

素因数分解:

$3^5\times 7^2\times {\mathrm{1811}}^1$

素因数の和:1840

約数の個数: 36

約数和(自身を含む): 37595376

約数和(自身を除く): 16031799

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1701, 1811, 3969, 5433, 11907, 12677, 16299, 38031, 48897, 88739, 114093, 146691, 266217, 342279, 440073, 798651, 1026837, 2395953, 3080511, 7187859, 21563577]

約数ペア:

[(1, 21563577), (3, 7187859), (7, 3080511), (9, 2395953), (21, 1026837), (27, 798651), (49, 440073), (63, 342279), (81, 266217), (147, 146691), (189, 114093), (243, 88739), (441, 48897), (567, 38031), (1323, 16299), (1701, 12677), (1811, 11907), (3969, 5433)]