20667801

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 38430720

約数和(自身を除く): 17762919

約数列:

[1, 3, 7, 11, 17, 19, 21, 33, 51, 57, 77, 119, 133, 187, 209, 231, 277, 323, 357, 399, 561, 627, 831, 969, 1309, 1463, 1939, 2261, 3047, 3553, 3927, 4389, 4709, 5263, 5817, 6783, 9141, 10659, 14127, 15789, 21329, 24871, 32963, 36841, 51799, 57893, 63987, 74613, 89471, 98889, 110523, 155397, 173679, 268413, 362593, 405251, 626297, 984181, 1087779, 1215753, 1878891, 2952543, 6889267, 20667801]

約数ペア:

[(1, 20667801), (3, 6889267), (7, 2952543), (11, 1878891), (17, 1215753), (19, 1087779), (21, 984181), (33, 626297), (51, 405251), (57, 362593), (77, 268413), (119, 173679), (133, 155397), (187, 110523), (209, 98889), (231, 89471), (277, 74613), (323, 63987), (357, 57893), (399, 51799), (561, 36841), (627, 32963), (831, 24871), (969, 21329), (1309, 15789), (1463, 14127), (1939, 10659), (2261, 9141), (3047, 6783), (3553, 5817), (3927, 5263), (4389, 4709)]