18917031

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 29933568

約数和(自身を除く): 11016537

約数列:

[1, 3, 7, 21, 41, 123, 127, 173, 287, 381, 519, 861, 889, 1211, 2667, 3633, 5207, 7093, 15621, 21279, 21971, 36449, 49651, 65913, 109347, 148953, 153797, 461391, 900811, 2702433, 6305677, 18917031]

約数ペア:

[(1, 18917031), (3, 6305677), (7, 2702433), (21, 900811), (41, 461391), (123, 153797), (127, 148953), (173, 109347), (287, 65913), (381, 49651), (519, 36449), (861, 21971), (889, 21279), (1211, 15621), (2667, 7093), (3633, 5207)]