19921473

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{673}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 35328384

約数和(自身を除く): 15406911

約数列:

[1, 3, 9, 11, 13, 23, 33, 39, 69, 99, 117, 143, 207, 253, 299, 429, 673, 759, 897, 1287, 2019, 2277, 2691, 3289, 6057, 7403, 8749, 9867, 15479, 22209, 26247, 29601, 46437, 66627, 78741, 96239, 139311, 170269, 201227, 288717, 510807, 603681, 866151, 1532421, 1811043, 2213497, 6640491, 19921473]

約数ペア:

[(1, 19921473), (3, 6640491), (9, 2213497), (11, 1811043), (13, 1532421), (23, 866151), (33, 603681), (39, 510807), (69, 288717), (99, 201227), (117, 170269), (143, 139311), (207, 96239), (253, 78741), (299, 66627), (429, 46437), (673, 29601), (759, 26247), (897, 22209), (1287, 15479), (2019, 9867), (2277, 8749), (2691, 7403), (3289, 6057)]