16981083

素因数分解:

$3^5\times 7^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 29702400

約数和(自身を除く): 12721317

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 81, 149, 189, 201, 243, 447, 469, 567, 603, 1043, 1341, 1407, 1701, 1809, 3129, 4023, 4221, 5427, 9387, 9983, 12069, 12663, 16281, 28161, 29949, 36207, 37989, 69881, 84483, 89847, 113967, 209643, 253449, 269541, 628929, 808623, 1886787, 2425869, 5660361, 16981083]

約数ペア:

[(1, 16981083), (3, 5660361), (7, 2425869), (9, 1886787), (21, 808623), (27, 628929), (63, 269541), (67, 253449), (81, 209643), (149, 113967), (189, 89847), (201, 84483), (243, 69881), (447, 37989), (469, 36207), (567, 29949), (603, 28161), (1043, 16281), (1341, 12663), (1407, 12069), (1701, 9983), (1809, 9387), (3129, 5427), (4023, 4221)]