213388575

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 364548096

約数和(自身を除く): 151159521

約数列:

[1, 3, 5, 15, 25, 43, 75, 127, 129, 215, 381, 521, 635, 645, 1075, 1563, 1905, 2605, 3175, 3225, 5461, 7815, 9525, 13025, 16383, 22403, 27305, 39075, 66167, 67209, 81915, 112015, 136525, 198501, 330835, 336045, 409575, 560075, 992505, 1654175, 1680225, 2845181, 4962525, 8535543, 14225905, 42677715, 71129525, 213388575]

約数ペア:

[(1, 213388575), (3, 71129525), (5, 42677715), (15, 14225905), (25, 8535543), (43, 4962525), (75, 2845181), (127, 1680225), (129, 1654175), (215, 992505), (381, 560075), (521, 409575), (635, 336045), (645, 330835), (1075, 198501), (1563, 136525), (1905, 112015), (2605, 81915), (3175, 67209), (3225, 66167), (5461, 39075), (7815, 27305), (9525, 22403), (13025, 16383)]