21490203

素因数分解:

$3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{5717}}^1$

素因数の和:5906

約数の個数: 16

約数和(自身を含む): 32935680

約数和(自身を除く): 11445477

約数列:

[1, 3, 7, 21, 179, 537, 1253, 3759, 5717, 17151, 40019, 120057, 1023343, 3070029, 7163401, 21490203]

約数ペア:

[(1, 21490203), (3, 7163401), (7, 3070029), (21, 1023343), (179, 120057), (537, 40019), (1253, 17151), (3759, 5717)]