21493167

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1\times {\mathrm{457}}^1$

素因数の和:778

約数の個数: 16

約数和(自身を含む): 29304672

約数和(自身を除く): 7811505

約数列:

[1, 3, 61, 183, 257, 457, 771, 1371, 15677, 27877, 47031, 83631, 117449, 352347, 7164389, 21493167]

約数ペア:

[(1, 21493167), (3, 7164389), (61, 352347), (183, 117449), (257, 83631), (457, 47031), (771, 27877), (1371, 15677)]