21381998

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{683}}^1\times {\mathrm{1423}}^1$

素因数の和:2119

約数の個数: 16

約数和(自身を含む): 35064576

約数和(自身を除く): 13682578

約数列:

[1, 2, 11, 22, 683, 1366, 1423, 2846, 7513, 15026, 15653, 31306, 971909, 1943818, 10690999, 21381998]

約数ペア:

[(1, 21381998), (2, 10690999), (11, 1943818), (22, 971909), (683, 31306), (1366, 15653), (1423, 15026), (2846, 7513)]