18641661

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 27236352

約数和(自身を除く): 8594691

約数列:

[1, 3, 23, 43, 61, 69, 103, 129, 183, 309, 989, 1403, 2369, 2623, 2967, 4209, 4429, 6283, 7107, 7869, 13287, 18849, 60329, 101867, 144509, 180987, 270169, 305601, 433527, 810507, 6213887, 18641661]

約数ペア:

[(1, 18641661), (3, 6213887), (23, 810507), (43, 433527), (61, 305601), (69, 270169), (103, 180987), (129, 144509), (183, 101867), (309, 60329), (989, 18849), (1403, 13287), (2369, 7869), (2623, 7107), (2967, 6283), (4209, 4429)]