20670309

素因数分解:

$3^5\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 36793120

約数和(自身を除く): 16122811

約数列:

[1, 3, 9, 11, 19, 27, 33, 37, 57, 81, 99, 111, 121, 171, 209, 243, 297, 333, 363, 407, 513, 627, 703, 891, 999, 1089, 1221, 1539, 1881, 2109, 2299, 2673, 2997, 3267, 3663, 4477, 4617, 5643, 6327, 6897, 7733, 8991, 9801, 10989, 13431, 16929, 18981, 20691, 23199, 29403, 32967, 40293, 50787, 56943, 62073, 69597, 85063, 98901, 120879, 170829, 186219, 208791, 255189, 362637, 558657, 626373, 765567, 1087911, 1879119, 2296701, 6890103, 20670309]

約数ペア:

[(1, 20670309), (3, 6890103), (9, 2296701), (11, 1879119), (19, 1087911), (27, 765567), (33, 626373), (37, 558657), (57, 362637), (81, 255189), (99, 208791), (111, 186219), (121, 170829), (171, 120879), (209, 98901), (243, 85063), (297, 69597), (333, 62073), (363, 56943), (407, 50787), (513, 40293), (627, 32967), (703, 29403), (891, 23199), (999, 20691), (1089, 18981), (1221, 16929), (1539, 13431), (1881, 10989), (2109, 9801), (2299, 8991), (2673, 7733), (2997, 6897), (3267, 6327), (3663, 5643), (4477, 4617)]