21467855

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7562545

約数列:

[1, 5, 17, 23, 79, 85, 115, 139, 391, 395, 695, 1343, 1817, 1955, 2363, 3197, 6715, 9085, 10981, 11815, 15985, 30889, 54349, 54905, 154445, 186677, 252563, 271745, 933385, 1262815, 4293571, 21467855]

約数ペア:

[(1, 21467855), (5, 4293571), (17, 1262815), (23, 933385), (79, 271745), (85, 252563), (115, 186677), (139, 154445), (391, 54905), (395, 54349), (695, 30889), (1343, 15985), (1817, 11815), (1955, 10981), (2363, 9085), (3197, 6715)]