21189753

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2969}}^1$

素因数の和:3049

約数の個数: 24

約数和(自身を含む): 33513480

約数和(自身を除く): 12323727

約数列:

[1, 3, 9, 13, 39, 61, 117, 183, 549, 793, 2379, 2969, 7137, 8907, 26721, 38597, 115791, 181109, 347373, 543327, 1629981, 2354417, 7063251, 21189753]

約数ペア:

[(1, 21189753), (3, 7063251), (9, 2354417), (13, 1629981), (39, 543327), (61, 347373), (117, 181109), (183, 115791), (549, 38597), (793, 26721), (2379, 8907), (2969, 7137)]