18400921

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{4877}}^1$

素因数の和:4909

約数の個数: 16

約数和(自身を含む): 23414400

約数和(自身を除く): 5013479

約数列:

[1, 7, 11, 49, 77, 343, 539, 3773, 4877, 34139, 53647, 238973, 375529, 1672811, 2628703, 18400921]

約数ペア:

[(1, 18400921), (7, 2628703), (11, 1672811), (49, 375529), (77, 238973), (343, 53647), (539, 34139), (3773, 4877)]