21625961

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{821}}^1$

素因数の和:952

約数の個数: 16

約数和(自身を含む): 25567488

約数和(自身を除く): 3941527

約数列:

[1, 7, 53, 71, 371, 497, 821, 3763, 5747, 26341, 43513, 58291, 304591, 408037, 3089423, 21625961]

約数ペア:

[(1, 21625961), (7, 3089423), (53, 408037), (71, 304591), (371, 58291), (497, 43513), (821, 26341), (3763, 5747)]