21119878

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{9127}}^1$

素因数の和:9231

約数の個数: 16

約数和(自身を含む): 34503840

約数和(自身を除く): 13383962

約数列:

[1, 2, 13, 26, 89, 178, 1157, 2314, 9127, 18254, 118651, 237302, 812303, 1624606, 10559939, 21119878]

約数ペア:

[(1, 21119878), (2, 10559939), (13, 1624606), (26, 812303), (89, 237302), (178, 118651), (1157, 18254), (2314, 9127)]