18129865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 24950016

約数和(自身を除く): 6820151

約数列:

[1, 5, 13, 23, 65, 67, 115, 181, 299, 335, 871, 905, 1495, 1541, 2353, 4163, 4355, 7705, 11765, 12127, 20033, 20815, 54119, 60635, 100165, 157651, 270595, 278921, 788255, 1394605, 3625973, 18129865]

約数ペア:

[(1, 18129865), (5, 3625973), (13, 1394605), (23, 788255), (65, 278921), (67, 270595), (115, 157651), (181, 100165), (299, 60635), (335, 54119), (871, 20815), (905, 20033), (1495, 12127), (1541, 11765), (2353, 7705), (4163, 4355)]