20457801

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{24979}}^1$

素因数の和:25005

約数の個数: 24

約数和(自身を含む): 36370880

約数和(自身を除く): 15913079

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 24979, 74937, 174853, 224811, 324727, 524559, 974181, 1573677, 2273089, 2922543, 6819267, 20457801]

約数ペア:

[(1, 20457801), (3, 6819267), (7, 2922543), (9, 2273089), (13, 1573677), (21, 974181), (39, 524559), (63, 324727), (91, 224811), (117, 174853), (273, 74937), (819, 24979)]