21437757

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 16578243

約数列:

[1, 3, 9, 11, 19, 27, 29, 33, 57, 87, 99, 131, 171, 209, 261, 297, 319, 393, 513, 551, 627, 783, 957, 1179, 1441, 1653, 1881, 2489, 2871, 3537, 3799, 4323, 4959, 5643, 6061, 7467, 8613, 11397, 12969, 14877, 18183, 22401, 27379, 34191, 38907, 41789, 54549, 67203, 72181, 82137, 102573, 125367, 163647, 216543, 246411, 376101, 649629, 739233, 793991, 1128303, 1948887, 2381973, 7145919, 21437757]

約数ペア:

[(1, 21437757), (3, 7145919), (9, 2381973), (11, 1948887), (19, 1128303), (27, 793991), (29, 739233), (33, 649629), (57, 376101), (87, 246411), (99, 216543), (131, 163647), (171, 125367), (209, 102573), (261, 82137), (297, 72181), (319, 67203), (393, 54549), (513, 41789), (551, 38907), (627, 34191), (783, 27379), (957, 22401), (1179, 18183), (1441, 14877), (1653, 12969), (1881, 11397), (2489, 8613), (2871, 7467), (3537, 6061), (3799, 5643), (4323, 4959)]