21054517

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 25198560

約数和(自身を除く): 4144043

約数列:

[1, 11, 17, 37, 179, 187, 289, 407, 629, 1969, 3043, 3179, 6623, 6919, 10693, 33473, 51731, 72853, 112591, 117623, 569041, 1238501, 1914047, 21054517]

約数ペア:

[(1, 21054517), (11, 1914047), (17, 1238501), (37, 569041), (179, 117623), (187, 112591), (289, 72853), (407, 51731), (629, 33473), (1969, 10693), (3043, 6919), (3179, 6623)]