21969577

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2237}}^1$

素因数の和:2328

約数の個数: 16

約数和(自身を含む): 26641152

約数和(自身を除く): 4671575

約数列:

[1, 7, 23, 61, 161, 427, 1403, 2237, 9821, 15659, 51451, 136457, 360157, 955199, 3138511, 21969577]

約数ペア:

[(1, 21969577), (7, 3138511), (23, 955199), (61, 360157), (161, 136457), (427, 51451), (1403, 15659), (2237, 9821)]