87720003

素因数分解:

$3^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2179}}^1$

素因数の和:2269

約数の個数: 40

約数和(自身を含む): 151937280

約数和(自身を除く): 64217277

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 189, 213, 497, 567, 639, 1491, 1917, 2179, 4473, 5751, 6537, 13419, 15253, 19611, 40257, 45759, 58833, 137277, 154709, 176499, 411831, 464127, 1082963, 1235493, 1392381, 3248889, 4177143, 9746667, 12531429, 29240001, 87720003]

約数ペア:

[(1, 87720003), (3, 29240001), (7, 12531429), (9, 9746667), (21, 4177143), (27, 3248889), (63, 1392381), (71, 1235493), (81, 1082963), (189, 464127), (213, 411831), (497, 176499), (567, 154709), (639, 137277), (1491, 58833), (1917, 45759), (2179, 40257), (4473, 19611), (5751, 15253), (6537, 13419)]