21772075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2161}}^1$

素因数の和:2215

約数の個数: 24

約数和(自身を含む): 30025856

約数和(自身を除く): 8253781

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 2161, 10075, 10805, 28093, 54025, 66991, 140465, 334955, 702325, 870883, 1674775, 4354415, 21772075]

約数ペア:

[(1, 21772075), (5, 4354415), (13, 1674775), (25, 870883), (31, 702325), (65, 334955), (155, 140465), (325, 66991), (403, 54025), (775, 28093), (2015, 10805), (2161, 10075)]