21117151

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{191}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 25482240

約数和(自身を除く): 4365089

約数列:

[1, 11, 19, 23, 191, 209, 253, 437, 529, 2101, 3629, 4393, 4807, 5819, 10051, 39919, 48323, 83467, 101039, 110561, 918137, 1111429, 1919741, 21117151]

約数ペア:

[(1, 21117151), (11, 1919741), (19, 1111429), (23, 918137), (191, 110561), (209, 101039), (253, 83467), (437, 48323), (529, 39919), (2101, 10051), (3629, 5819), (4393, 4807)]