21493831681

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1233647}}^1$

素因数の和:1233804

約数の個数: 16

約数和(自身を含む): 26054645760

約数和(自身を除く): 4560814079

約数列:

[1, 7, 19, 131, 133, 917, 2489, 17423, 1233647, 8635529, 23439293, 161607757, 164075051, 1131254299, 3070547383, 21493831681]

約数ペア:

[(1, 21493831681), (7, 3070547383), (19, 1131254299), (131, 164075051), (133, 161607757), (917, 23439293), (2489, 8635529), (17423, 1233647)]