18688995

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{463}}^1$

素因数の和:513

約数の個数: 64

約数和(自身を含む): 37416960

約数和(自身を除く): 18727965

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 115, 117, 135, 195, 207, 299, 345, 351, 463, 585, 621, 897, 1035, 1389, 1495, 1755, 2315, 2691, 3105, 4167, 4485, 6019, 6945, 8073, 10649, 12501, 13455, 18057, 20835, 30095, 31947, 40365, 53245, 54171, 62505, 90285, 95841, 138437, 159735, 162513, 270855, 287523, 415311, 479205, 692185, 812565, 1245933, 1437615, 2076555, 3737799, 6229665, 18688995]

約数ペア:

[(1, 18688995), (3, 6229665), (5, 3737799), (9, 2076555), (13, 1437615), (15, 1245933), (23, 812565), (27, 692185), (39, 479205), (45, 415311), (65, 287523), (69, 270855), (115, 162513), (117, 159735), (135, 138437), (195, 95841), (207, 90285), (299, 62505), (345, 54171), (351, 53245), (463, 40365), (585, 31947), (621, 30095), (897, 20835), (1035, 18057), (1389, 13455), (1495, 12501), (1755, 10649), (2315, 8073), (2691, 6945), (3105, 6019), (4167, 4485)]