21839103

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 15900417

約数列:

[1, 3, 9, 11, 13, 33, 39, 71, 99, 117, 143, 213, 239, 429, 639, 717, 781, 923, 1287, 2151, 2343, 2629, 2769, 3107, 7029, 7887, 8307, 9321, 10153, 16969, 23661, 27963, 30459, 34177, 50907, 91377, 102531, 152721, 186659, 220597, 307593, 559977, 661791, 1679931, 1985373, 2426567, 7279701, 21839103]

約数ペア:

[(1, 21839103), (3, 7279701), (9, 2426567), (11, 1985373), (13, 1679931), (33, 661791), (39, 559977), (71, 307593), (99, 220597), (117, 186659), (143, 152721), (213, 102531), (239, 91377), (429, 50907), (639, 34177), (717, 30459), (781, 27963), (923, 23661), (1287, 16969), (2151, 10153), (2343, 9321), (2629, 8307), (2769, 7887), (3107, 7029)]