221401305

素因数分解:

$3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{17509}}^1$

素因数の和:17801

約数の個数: 24

約数和(自身を含む): 385149960

約数和(自身を除く): 163748655

約数列:

[1, 3, 5, 9, 15, 45, 281, 843, 1405, 2529, 4215, 12645, 17509, 52527, 87545, 157581, 262635, 787905, 4920029, 14760087, 24600145, 44280261, 73800435, 221401305]

約数ペア:

[(1, 221401305), (3, 73800435), (5, 44280261), (9, 24600145), (15, 14760087), (45, 4920029), (281, 787905), (843, 262635), (1405, 157581), (2529, 87545), (4215, 52527), (12645, 17509)]