21279609

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5867}}^1$

素因数の和:5917

約数の個数: 24

約数和(自身を含む): 34175232

約数和(自身を除く): 12895623

約数列:

[1, 3, 9, 13, 31, 39, 93, 117, 279, 403, 1209, 3627, 5867, 17601, 52803, 76271, 181877, 228813, 545631, 686439, 1636893, 2364401, 7093203, 21279609]

約数ペア:

[(1, 21279609), (3, 7093203), (9, 2364401), (13, 1636893), (31, 686439), (39, 545631), (93, 228813), (117, 181877), (279, 76271), (403, 52803), (1209, 17601), (3627, 5867)]