21493131

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{9721}}^1$

素因数の和:9802

約数の個数: 16

約数和(自身を含む): 31732608

約数和(自身を除く): 10239477

約数列:

[1, 3, 11, 33, 67, 201, 737, 2211, 9721, 29163, 106931, 320793, 651307, 1953921, 7164377, 21493131]

約数ペア:

[(1, 21493131), (3, 7164377), (11, 1953921), (33, 651307), (67, 320793), (201, 106931), (737, 29163), (2211, 9721)]