21377517

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{257}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 34774272

約数和(自身を除く): 13396755

約数列:

[1, 3, 7, 17, 21, 51, 119, 233, 257, 357, 699, 771, 1631, 1799, 3961, 4369, 4893, 5397, 11883, 13107, 27727, 30583, 59881, 83181, 91749, 179643, 419167, 1017977, 1257501, 3053931, 7125839, 21377517]

約数ペア:

[(1, 21377517), (3, 7125839), (7, 3053931), (17, 1257501), (21, 1017977), (51, 419167), (119, 179643), (233, 91749), (257, 83181), (357, 59881), (699, 30583), (771, 27727), (1631, 13107), (1799, 11883), (3961, 5397), (4369, 4893)]