18663399

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{557}}^1$

素因数の和:656

約数の個数: 32

約数和(自身を含む): 29730240

約数和(自身を除く): 11066841

約数列:

[1, 3, 9, 17, 27, 51, 73, 153, 219, 459, 557, 657, 1241, 1671, 1971, 3723, 5013, 9469, 11169, 15039, 28407, 33507, 40661, 85221, 121983, 255663, 365949, 691237, 1097847, 2073711, 6221133, 18663399]

約数ペア:

[(1, 18663399), (3, 6221133), (9, 2073711), (17, 1097847), (27, 691237), (51, 365949), (73, 255663), (153, 121983), (219, 85221), (459, 40661), (557, 33507), (657, 28407), (1241, 15039), (1671, 11169), (1971, 9469), (3723, 5013)]