216657

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 378560

約数和(自身を除く): 161903

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 181, 399, 543, 1197, 1267, 1629, 3439, 3801, 10317, 11403, 24073, 30951, 72219, 216657]

約数ペア:

[(1, 216657), (3, 72219), (7, 30951), (9, 24073), (19, 11403), (21, 10317), (57, 3801), (63, 3439), (133, 1629), (171, 1267), (181, 1197), (399, 543)]