20394087

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1$

素因数の和:755

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12783513

約数列:

[1, 3, 7, 19, 21, 57, 79, 133, 237, 399, 553, 647, 1501, 1659, 1941, 4503, 4529, 10507, 12293, 13587, 31521, 36879, 51113, 86051, 153339, 258153, 357791, 971147, 1073373, 2913441, 6798029, 20394087]

約数ペア:

[(1, 20394087), (3, 6798029), (7, 2913441), (19, 1073373), (21, 971147), (57, 357791), (79, 258153), (133, 153339), (237, 86051), (399, 51113), (553, 36879), (647, 31521), (1501, 13587), (1659, 12293), (1941, 10507), (4503, 4529)]