21999109

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{977}}^1$

素因数の和:1100

約数の個数: 16

約数和(自身を含む): 25349760

約数和(自身を除く): 3350651

約数列:

[1, 11, 23, 89, 253, 977, 979, 2047, 10747, 22471, 22517, 86953, 247181, 956483, 1999919, 21999109]

約数ペア:

[(1, 21999109), (11, 1999919), (23, 956483), (89, 247181), (253, 86953), (977, 22517), (979, 22471), (2047, 10747)]