21404439

素因数分解:

$3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1039}}^1$

素因数の和:1164

約数の個数: 32

約数和(自身を含む): 36608000

約数和(自身を除く): 15203561

約数列:

[1, 3, 7, 9, 21, 27, 63, 109, 189, 327, 763, 981, 1039, 2289, 2943, 3117, 6867, 7273, 9351, 20601, 21819, 28053, 65457, 113251, 196371, 339753, 792757, 1019259, 2378271, 3057777, 7134813, 21404439]

約数ペア:

[(1, 21404439), (3, 7134813), (7, 3057777), (9, 2378271), (21, 1019259), (27, 792757), (63, 339753), (109, 196371), (189, 113251), (327, 65457), (763, 28053), (981, 21819), (1039, 20601), (2289, 9351), (2943, 7273), (3117, 6867)]