25540005

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{409}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 42981120

約数和(自身を除く): 17441115

約数列:

[1, 3, 5, 15, 23, 69, 115, 181, 345, 409, 543, 905, 1227, 2045, 2715, 4163, 6135, 9407, 12489, 20815, 28221, 47035, 62445, 74029, 141105, 222087, 370145, 1110435, 1702667, 5108001, 8513335, 25540005]

約数ペア:

[(1, 25540005), (3, 8513335), (5, 5108001), (15, 1702667), (23, 1110435), (69, 370145), (115, 222087), (181, 141105), (345, 74029), (409, 62445), (543, 47035), (905, 28221), (1227, 20815), (2045, 12489), (2715, 9407), (4163, 6135)]