81356555

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{449}}^1$

素因数の和:659

約数の個数: 32

約数和(自身を含む): 116121600

約数和(自身を除く): 34765045

約数列:

[1, 5, 7, 31, 35, 155, 167, 217, 449, 835, 1085, 1169, 2245, 3143, 5177, 5845, 13919, 15715, 25885, 36239, 69595, 74983, 97433, 181195, 374915, 487165, 524881, 2324473, 2624405, 11622365, 16271311, 81356555]

約数ペア:

[(1, 81356555), (5, 16271311), (7, 11622365), (31, 2624405), (35, 2324473), (155, 524881), (167, 487165), (217, 374915), (449, 181195), (835, 97433), (1085, 74983), (1169, 69595), (2245, 36239), (3143, 25885), (5177, 15715), (5845, 13919)]