18668025

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{2861}}^1$

素因数の和:2906

約数の個数: 36

約数和(自身を含む): 34601580

約数和(自身を除く): 15933555

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 2861, 6525, 8583, 14305, 25749, 42915, 71525, 82969, 128745, 214575, 248907, 414845, 643725, 746721, 1244535, 2074225, 3733605, 6222675, 18668025]

約数ペア:

[(1, 18668025), (3, 6222675), (5, 3733605), (9, 2074225), (15, 1244535), (25, 746721), (29, 643725), (45, 414845), (75, 248907), (87, 214575), (145, 128745), (225, 82969), (261, 71525), (435, 42915), (725, 25749), (1305, 14305), (2175, 8583), (2861, 6525)]