21704163

素因数分解:

$3^1\times {\mathrm{13}}^3\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:168

約数の個数: 32

約数和(自身を含む): 32558400

約数和(自身を除く): 10854237

約数列:

[1, 3, 13, 37, 39, 89, 111, 169, 267, 481, 507, 1157, 1443, 2197, 3293, 3471, 6253, 6591, 9879, 15041, 18759, 42809, 45123, 81289, 128427, 195533, 243867, 556517, 586599, 1669551, 7234721, 21704163]

約数ペア:

[(1, 21704163), (3, 7234721), (13, 1669551), (37, 586599), (39, 556517), (89, 243867), (111, 195533), (169, 128427), (267, 81289), (481, 45123), (507, 42809), (1157, 18759), (1443, 15041), (2197, 9879), (3293, 6591), (3471, 6253)]