21428143

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 26922240

約数和(自身を除く): 5494097

約数列:

[1, 11, 17, 19, 37, 163, 187, 209, 323, 407, 629, 703, 1793, 2771, 3097, 3553, 6031, 6919, 7733, 11951, 30481, 34067, 52649, 66341, 102527, 114589, 131461, 579139, 1127797, 1260479, 1948013, 21428143]

約数ペア:

[(1, 21428143), (11, 1948013), (17, 1260479), (19, 1127797), (37, 579139), (163, 131461), (187, 114589), (209, 102527), (323, 66341), (407, 52649), (629, 34067), (703, 30481), (1793, 11951), (2771, 7733), (3097, 6919), (3553, 6031)]