18662973

素因数分解:

$3^1\times 7^4\times {\mathrm{2591}}^1$

素因数の和:2622

約数の個数: 20

約数和(自身を含む): 29040768

約数和(自身を除く): 10377795

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2591, 7203, 7773, 18137, 54411, 126959, 380877, 888713, 2666139, 6220991, 18662973]

約数ペア:

[(1, 18662973), (3, 6220991), (7, 2666139), (21, 888713), (49, 380877), (147, 126959), (343, 54411), (1029, 18137), (2401, 7773), (2591, 7203)]