21100419

素因数分解:

$3^5\times {\mathrm{71}}^1\times {\mathrm{1223}}^1$

素因数の和:1309

約数の個数: 24

約数和(自身を含む): 32078592

約数和(自身を除く): 10978173

約数列:

[1, 3, 9, 27, 71, 81, 213, 243, 639, 1223, 1917, 3669, 5751, 11007, 17253, 33021, 86833, 99063, 260499, 297189, 781497, 2344491, 7033473, 21100419]

約数ペア:

[(1, 21100419), (3, 7033473), (9, 2344491), (27, 781497), (71, 297189), (81, 260499), (213, 99063), (243, 86833), (639, 33021), (1223, 17253), (1917, 11007), (3669, 5751)]