18778890231

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{643}}^1\times {\mathrm{12433}}^1$

素因数の和:13117

約数の個数: 40

約数和(自身を含む): 29067210480

約数和(自身を除く): 10288320249

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 643, 783, 1929, 2349, 5787, 12433, 17361, 18647, 37299, 52083, 55941, 111897, 167823, 335691, 360557, 503469, 1007073, 1081671, 1510407, 3245013, 7994419, 9735039, 23983257, 29205117, 71949771, 215849313, 231838151, 647547939, 695514453, 2086543359, 6259630077, 18778890231]

約数ペア:

[(1, 18778890231), (3, 6259630077), (9, 2086543359), (27, 695514453), (29, 647547939), (81, 231838151), (87, 215849313), (261, 71949771), (643, 29205117), (783, 23983257), (1929, 9735039), (2349, 7994419), (5787, 3245013), (12433, 1510407), (17361, 1081671), (18647, 1007073), (37299, 503469), (52083, 360557), (55941, 335691), (111897, 167823)]