21539914

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{42569}}^1$

素因数の和:42605

約数の個数: 16

約数和(自身を含む): 36780480

約数和(自身を除く): 15240566

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 42569, 85138, 468259, 936518, 979087, 1958174, 10769957, 21539914]

約数ペア:

[(1, 21539914), (2, 10769957), (11, 1958174), (22, 979087), (23, 936518), (46, 468259), (253, 85138), (506, 42569)]