668493

素因数分解:

$3^6\times 7^1\times {\mathrm{131}}^1$

素因数の和:156

約数の個数: 28

約数和(自身を含む): 1154208

約数和(自身を除く): 485715

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 131, 189, 243, 393, 567, 729, 917, 1179, 1701, 2751, 3537, 5103, 8253, 10611, 24759, 31833, 74277, 95499, 222831, 668493]

約数ペア:

[(1, 668493), (3, 222831), (7, 95499), (9, 74277), (21, 31833), (27, 24759), (63, 10611), (81, 8253), (131, 5103), (189, 3537), (243, 2751), (393, 1701), (567, 1179), (729, 917)]