18660717

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 30326400

約数和(自身を除く): 11665683

約数列:

[1, 3, 9, 19, 29, 53, 57, 71, 87, 159, 171, 213, 261, 477, 551, 639, 1007, 1349, 1537, 1653, 2059, 3021, 3763, 4047, 4611, 4959, 6177, 9063, 11289, 12141, 13833, 18531, 29203, 33867, 39121, 71497, 87609, 109127, 117363, 214491, 262827, 327381, 352089, 643473, 982143, 2073413, 6220239, 18660717]

約数ペア:

[(1, 18660717), (3, 6220239), (9, 2073413), (19, 982143), (29, 643473), (53, 352089), (57, 327381), (71, 262827), (87, 214491), (159, 117363), (171, 109127), (213, 87609), (261, 71497), (477, 39121), (551, 33867), (639, 29203), (1007, 18531), (1349, 13833), (1537, 12141), (1653, 11289), (2059, 9063), (3021, 6177), (3763, 4959), (4047, 4611)]