18205803

素因数分解:

$3^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 34856640

約数和(自身を除く): 16650837

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 81, 99, 139, 147, 189, 231, 243, 297, 417, 441, 539, 567, 693, 891, 973, 1251, 1323, 1529, 1617, 1701, 2079, 2673, 2919, 3753, 3969, 4587, 4851, 6237, 6811, 8757, 10703, 11259, 11907, 13761, 14553, 18711, 20433, 26271, 32109, 33777, 41283, 43659, 61299, 74921, 78813, 96327, 123849, 130977, 183897, 224763, 236439, 288981, 371547, 551691, 674289, 866943, 1655073, 2022867, 2600829, 6068601, 18205803]

約数ペア:

[(1, 18205803), (3, 6068601), (7, 2600829), (9, 2022867), (11, 1655073), (21, 866943), (27, 674289), (33, 551691), (49, 371547), (63, 288981), (77, 236439), (81, 224763), (99, 183897), (139, 130977), (147, 123849), (189, 96327), (231, 78813), (243, 74921), (297, 61299), (417, 43659), (441, 41283), (539, 33777), (567, 32109), (693, 26271), (891, 20433), (973, 18711), (1251, 14553), (1323, 13761), (1529, 11907), (1617, 11259), (1701, 10703), (2079, 8757), (2673, 6811), (2919, 6237), (3753, 4851), (3969, 4587)]