21878715

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47051}}^1$

素因数の和:47090

約数の個数: 16

約数和(自身を含む): 36135936

約数和(自身を除く): 14257221

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 47051, 141153, 235255, 705765, 1458581, 4375743, 7292905, 21878715]

約数ペア:

[(1, 21878715), (3, 7292905), (5, 4375743), (15, 1458581), (31, 705765), (93, 235255), (155, 141153), (465, 47051)]