18855771

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 64

約数和(自身を含む): 32140800

約数和(自身を除く): 13285029

約数列:

[1, 3, 11, 17, 19, 29, 33, 51, 57, 61, 87, 183, 187, 209, 319, 323, 493, 551, 561, 627, 671, 957, 969, 1037, 1159, 1479, 1653, 1769, 2013, 3111, 3477, 3553, 5307, 5423, 6061, 9367, 10659, 11407, 12749, 16269, 18183, 19459, 19703, 28101, 30073, 33611, 34221, 38247, 58377, 59109, 90219, 100833, 103037, 216733, 309111, 330803, 369721, 571387, 650199, 992409, 1109163, 1714161, 6285257, 18855771]

約数ペア:

[(1, 18855771), (3, 6285257), (11, 1714161), (17, 1109163), (19, 992409), (29, 650199), (33, 571387), (51, 369721), (57, 330803), (61, 309111), (87, 216733), (183, 103037), (187, 100833), (209, 90219), (319, 59109), (323, 58377), (493, 38247), (551, 34221), (561, 33611), (627, 30073), (671, 28101), (957, 19703), (969, 19459), (1037, 18183), (1159, 16269), (1479, 12749), (1653, 11407), (1769, 10659), (2013, 9367), (3111, 6061), (3477, 5423), (3553, 5307)]