21741249

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3911}}^1$

素因数の和:4040

約数の個数: 16

約数和(自身を含む): 30983040

約数和(自身を除く): 9241791

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3911, 5559, 11733, 66487, 199461, 426299, 1278897, 7247083, 21741249]

約数ペア:

[(1, 21741249), (3, 7247083), (17, 1278897), (51, 426299), (109, 199461), (327, 66487), (1853, 11733), (3911, 5559)]