21127777

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^2\times {\mathrm{61}}^1$

素因数の和:169

約数の個数: 24

約数和(自身を含む): 25123392

約数和(自身を除く): 3995615

約数列:

[1, 11, 23, 37, 61, 253, 407, 671, 851, 1369, 1403, 2257, 9361, 15059, 15433, 24827, 31487, 51911, 83509, 346357, 571021, 918599, 1920707, 21127777]

約数ペア:

[(1, 21127777), (11, 1920707), (23, 918599), (37, 571021), (61, 346357), (253, 83509), (407, 51911), (671, 31487), (851, 24827), (1369, 15433), (1403, 15059), (2257, 9361)]