21040725

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^2\times {\mathrm{127}}^1$

素因数の和:234

約数の個数: 36

約数和(自身を含む): 35823104

約数和(自身を除く): 14782379

約数列:

[1, 3, 5, 15, 25, 47, 75, 127, 141, 235, 381, 635, 705, 1175, 1905, 2209, 3175, 3525, 5969, 6627, 9525, 11045, 17907, 29845, 33135, 55225, 89535, 149225, 165675, 280543, 447675, 841629, 1402715, 4208145, 7013575, 21040725]

約数ペア:

[(1, 21040725), (3, 7013575), (5, 4208145), (15, 1402715), (25, 841629), (47, 447675), (75, 280543), (127, 165675), (141, 149225), (235, 89535), (381, 55225), (635, 33135), (705, 29845), (1175, 17907), (1905, 11045), (2209, 9525), (3175, 6627), (3525, 5969)]