665339913

素因数分解:

$3^4\times 7^1\times {\mathrm{1173439}}^1$

素因数の和:1173458

約数の個数: 20

約数和(自身を含む): 1135889920

約数和(自身を除く): 470550007

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 1173439, 3520317, 8214073, 10560951, 24642219, 31682853, 73926657, 95048559, 221779971, 665339913]

約数ペア:

[(1, 665339913), (3, 221779971), (7, 95048559), (9, 73926657), (21, 31682853), (27, 24642219), (63, 10560951), (81, 8214073), (189, 3520317), (567, 1173439)]