21040203

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{2531}}^1$

素因数の和:2714

約数の個数: 16

約数和(自身を含む): 29897856

約数和(自身を除く): 8857653

約数列:

[1, 3, 17, 51, 163, 489, 2531, 2771, 7593, 8313, 43027, 129081, 412553, 1237659, 7013401, 21040203]

約数ペア:

[(1, 21040203), (3, 7013401), (17, 1237659), (51, 412553), (163, 129081), (489, 43027), (2531, 8313), (2771, 7593)]