21785385

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{409}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 36132480

約数和(自身を除く): 14347095

約数列:

[1, 3, 5, 15, 53, 67, 159, 201, 265, 335, 409, 795, 1005, 1227, 2045, 3551, 6135, 10653, 17755, 21677, 27403, 53265, 65031, 82209, 108385, 137015, 325155, 411045, 1452359, 4357077, 7261795, 21785385]

約数ペア:

[(1, 21785385), (3, 7261795), (5, 4357077), (15, 1452359), (53, 411045), (67, 325155), (159, 137015), (201, 108385), (265, 82209), (335, 65031), (409, 53265), (795, 27403), (1005, 21677), (1227, 17755), (2045, 10653), (3551, 6135)]