21139533

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{683}}^1$

素因数の和:889

約数の個数: 24

約数和(自身を含む): 32366880

約数和(自身を除く): 11227347

約数列:

[1, 3, 9, 19, 57, 171, 181, 543, 683, 1629, 2049, 3439, 6147, 10317, 12977, 30951, 38931, 116793, 123623, 370869, 1112607, 2348837, 7046511, 21139533]

約数ペア:

[(1, 21139533), (3, 7046511), (9, 2348837), (19, 1112607), (57, 370869), (171, 123623), (181, 116793), (543, 38931), (683, 30951), (1629, 12977), (2049, 10317), (3439, 6147)]