18551619

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{43}}^1$

素因数の和:129

約数の個数: 48

約数和(自身を含む): 30659200

約数和(自身を除く): 12107581

約数列:

[1, 3, 9, 19, 27, 29, 43, 57, 87, 129, 171, 261, 387, 513, 551, 783, 817, 841, 1161, 1247, 1653, 2451, 2523, 3741, 4959, 7353, 7569, 11223, 14877, 15979, 22059, 22707, 23693, 33669, 36163, 47937, 71079, 108489, 143811, 213237, 325467, 431433, 639711, 687097, 976401, 2061291, 6183873, 18551619]

約数ペア:

[(1, 18551619), (3, 6183873), (9, 2061291), (19, 976401), (27, 687097), (29, 639711), (43, 431433), (57, 325467), (87, 213237), (129, 143811), (171, 108489), (261, 71079), (387, 47937), (513, 36163), (551, 33669), (783, 23693), (817, 22707), (841, 22059), (1161, 15979), (1247, 14877), (1653, 11223), (2451, 7569), (2523, 7353), (3741, 4959)]