21002841

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1091}}^1$

素因数の和:1154

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 12543399

約数列:

[1, 3, 9, 23, 27, 31, 69, 93, 207, 279, 621, 713, 837, 1091, 2139, 3273, 6417, 9819, 19251, 25093, 29457, 33821, 75279, 101463, 225837, 304389, 677511, 777883, 913167, 2333649, 7000947, 21002841]

約数ペア:

[(1, 21002841), (3, 7000947), (9, 2333649), (23, 913167), (27, 777883), (31, 677511), (69, 304389), (93, 225837), (207, 101463), (279, 75279), (621, 33821), (713, 29457), (837, 25093), (1091, 19251), (2139, 9819), (3273, 6417)]