21763161

素因数分解:

$3^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:443

約数の個数: 40

約数和(自身を含む): 37566144

約数和(自身を除く): 15802983

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 131, 189, 293, 393, 567, 879, 917, 1179, 2051, 2637, 2751, 3537, 6153, 7911, 8253, 10611, 18459, 23733, 24759, 38383, 55377, 74277, 115149, 166131, 268681, 345447, 806043, 1036341, 2418129, 3109023, 7254387, 21763161]

約数ペア:

[(1, 21763161), (3, 7254387), (7, 3109023), (9, 2418129), (21, 1036341), (27, 806043), (63, 345447), (81, 268681), (131, 166131), (189, 115149), (293, 74277), (393, 55377), (567, 38383), (879, 24759), (917, 23733), (1179, 18459), (2051, 10611), (2637, 8253), (2751, 7911), (3537, 6153)]