21861191

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:335

約数の個数: 24

約数和(自身を含む): 26078640

約数和(自身を除く): 4217449

約数列:

[1, 11, 19, 37, 121, 209, 257, 407, 703, 2299, 2827, 4477, 4883, 7733, 9509, 31097, 53713, 85063, 104599, 180671, 590843, 1150589, 1987381, 21861191]

約数ペア:

[(1, 21861191), (11, 1987381), (19, 1150589), (37, 590843), (121, 180671), (209, 104599), (257, 85063), (407, 53713), (703, 31097), (2299, 9509), (2827, 7733), (4477, 4883)]