21859065

素因数分解:

$3^7\times 5^1\times {\mathrm{1999}}^1$

素因数の和:2025

約数の個数: 32

約数和(自身を含む): 39360000

約数和(自身を除く): 17500935

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1999, 2187, 3645, 5997, 9995, 10935, 17991, 29985, 53973, 89955, 161919, 269865, 485757, 809595, 1457271, 2428785, 4371813, 7286355, 21859065]

約数ペア:

[(1, 21859065), (3, 7286355), (5, 4371813), (9, 2428785), (15, 1457271), (27, 809595), (45, 485757), (81, 269865), (135, 161919), (243, 89955), (405, 53973), (729, 29985), (1215, 17991), (1999, 10935), (2187, 9995), (3645, 5997)]