1021815

素因数分解:

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

素因数の和:78

約数の個数: 36

約数和(自身を含む): 1902264

約数和(自身を除く): 880449

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 243, 261, 405, 435, 783, 841, 1215, 1305, 2349, 2523, 3915, 4205, 7047, 7569, 11745, 12615, 22707, 35235, 37845, 68121, 113535, 204363, 340605, 1021815]

約数ペア:

[(1, 1021815), (3, 340605), (5, 204363), (9, 113535), (15, 68121), (27, 37845), (29, 35235), (45, 22707), (81, 12615), (87, 11745), (135, 7569), (145, 7047), (243, 4205), (261, 3915), (405, 2523), (435, 2349), (783, 1305), (841, 1215)]