19258981

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:181

約数の個数: 32

約数和(自身を含む): 24427008

約数和(自身を除く): 5168027

約数列:

[1, 7, 23, 37, 53, 61, 161, 259, 371, 427, 851, 1219, 1403, 1961, 2257, 3233, 5957, 8533, 9821, 13727, 15799, 22631, 45103, 51911, 74359, 119621, 315721, 363377, 520513, 837347, 2751283, 19258981]

約数ペア:

[(1, 19258981), (7, 2751283), (23, 837347), (37, 520513), (53, 363377), (61, 315721), (161, 119621), (259, 74359), (371, 51911), (427, 45103), (851, 22631), (1219, 15799), (1403, 13727), (1961, 9821), (2257, 8533), (3233, 5957)]