21967781

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1181}}^1$

素因数の和:1300

約数の個数: 16

約数和(自身を含む): 25531200

約数和(自身を除く): 3563419

約数列:

[1, 11, 19, 89, 209, 979, 1181, 1691, 12991, 18601, 22439, 105109, 246829, 1156199, 1997071, 21967781]

約数ペア:

[(1, 21967781), (11, 1997071), (19, 1156199), (89, 246829), (209, 105109), (979, 22439), (1181, 18601), (1691, 12991)]