18317187

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 31868928

約数和(自身を除く): 13551741

約数列:

[1, 3, 7, 9, 21, 31, 63, 83, 93, 113, 217, 249, 279, 339, 581, 651, 747, 791, 1017, 1743, 1953, 2373, 2573, 3503, 5229, 7119, 7719, 9379, 10509, 18011, 23157, 24521, 28137, 31527, 54033, 65653, 73563, 84411, 162099, 196959, 220689, 290749, 590877, 872247, 2035243, 2616741, 6105729, 18317187]

約数ペア:

[(1, 18317187), (3, 6105729), (7, 2616741), (9, 2035243), (21, 872247), (31, 590877), (63, 290749), (83, 220689), (93, 196959), (113, 162099), (217, 84411), (249, 73563), (279, 65653), (339, 54033), (581, 31527), (651, 28137), (747, 24521), (791, 23157), (1017, 18011), (1743, 10509), (1953, 9379), (2373, 7719), (2573, 7119), (3503, 5229)]