20487987

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{4271}}^1$

素因数の和:4331

約数の個数: 24

約数和(自身を含む): 32655168

約数和(自身を除く): 12167181

約数列:

[1, 3, 9, 13, 39, 41, 117, 123, 369, 533, 1599, 4271, 4797, 12813, 38439, 55523, 166569, 175111, 499707, 525333, 1575999, 2276443, 6829329, 20487987]

約数ペア:

[(1, 20487987), (3, 6829329), (9, 2276443), (13, 1575999), (39, 525333), (41, 499707), (117, 175111), (123, 166569), (369, 55523), (533, 38439), (1599, 12813), (4271, 4797)]