18124925

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 28664832

約数和(自身を除く): 10539907

約数列:

[1, 5, 7, 13, 25, 31, 35, 65, 91, 155, 175, 217, 257, 325, 403, 455, 775, 1085, 1285, 1799, 2015, 2275, 2821, 3341, 5425, 6425, 7967, 8995, 10075, 14105, 16705, 23387, 39835, 44975, 55769, 70525, 83525, 103571, 116935, 199175, 278845, 517855, 584675, 724997, 1394225, 2589275, 3624985, 18124925]

約数ペア:

[(1, 18124925), (5, 3624985), (7, 2589275), (13, 1394225), (25, 724997), (31, 584675), (35, 517855), (65, 278845), (91, 199175), (155, 116935), (175, 103571), (217, 83525), (257, 70525), (325, 55769), (403, 44975), (455, 39835), (775, 23387), (1085, 16705), (1285, 14105), (1799, 10075), (2015, 8995), (2275, 7967), (2821, 6425), (3341, 5425)]