21870789

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{9973}}^1$

素因数の和:10036

約数の個数: 16

約数和(自身を含む): 31597632

約数和(自身を除く): 9726843

約数列:

[1, 3, 17, 43, 51, 129, 731, 2193, 9973, 29919, 169541, 428839, 508623, 1286517, 7290263, 21870789]

約数ペア:

[(1, 21870789), (3, 7290263), (17, 1286517), (43, 508623), (51, 428839), (129, 169541), (731, 29919), (2193, 9973)]