18509913

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{349}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 27518400

約数和(自身を除く): 9008487

約数列:

[1, 3, 9, 71, 83, 213, 249, 349, 639, 747, 1047, 3141, 5893, 17679, 24779, 28967, 53037, 74337, 86901, 223011, 260703, 2056657, 6169971, 18509913]

約数ペア:

[(1, 18509913), (3, 6169971), (9, 2056657), (71, 260703), (83, 223011), (213, 86901), (249, 74337), (349, 53037), (639, 28967), (747, 24779), (1047, 17679), (3141, 5893)]