18875925

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1951}}^1$

素因数の和:2010

約数の個数: 36

約数和(自身を含む): 34612864

約数和(自身を除く): 15736939

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 1951, 3225, 5853, 9675, 9755, 17559, 29265, 48775, 83893, 87795, 146325, 251679, 419465, 438975, 755037, 1258395, 2097325, 3775185, 6291975, 18875925]

約数ペア:

[(1, 18875925), (3, 6291975), (5, 3775185), (9, 2097325), (15, 1258395), (25, 755037), (43, 438975), (45, 419465), (75, 251679), (129, 146325), (215, 87795), (225, 83893), (387, 48775), (645, 29265), (1075, 17559), (1935, 9755), (1951, 9675), (3225, 5853)]