21457239

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{4909}}^1$

素因数の和:4990

約数の個数: 16

約数和(自身を含む): 30167040

約数和(自身を除く): 8709801

約数列:

[1, 3, 31, 47, 93, 141, 1457, 4371, 4909, 14727, 152179, 230723, 456537, 692169, 7152413, 21457239]

約数ペア:

[(1, 21457239), (3, 7152413), (31, 692169), (47, 456537), (93, 230723), (141, 152179), (1457, 14727), (4371, 4909)]