18239525

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:138

約数の個数: 36

約数和(自身を含む): 24944832

約数和(自身を除く): 6705307

約数列:

[1, 5, 19, 25, 43, 47, 95, 215, 235, 361, 475, 817, 893, 1075, 1175, 1805, 2021, 4085, 4465, 9025, 10105, 15523, 16967, 20425, 22325, 38399, 50525, 77615, 84835, 191995, 388075, 424175, 729581, 959975, 3647905, 18239525]

約数ペア:

[(1, 18239525), (5, 3647905), (19, 959975), (25, 729581), (43, 424175), (47, 388075), (95, 191995), (215, 84835), (235, 77615), (361, 50525), (475, 38399), (817, 22325), (893, 20425), (1075, 16967), (1175, 15523), (1805, 10105), (2021, 9025), (4085, 4465)]