21238618

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{457}}^1\times {\mathrm{1223}}^1$

素因数の和:1701

約数の個数: 16

約数和(自身を含む): 33635520

約数和(自身を除く): 12396902

約数列:

[1, 2, 19, 38, 457, 914, 1223, 2446, 8683, 17366, 23237, 46474, 558911, 1117822, 10619309, 21238618]

約数ペア:

[(1, 21238618), (2, 10619309), (19, 1117822), (38, 558911), (457, 46474), (914, 23237), (1223, 17366), (2446, 8683)]