209545540

素因数分解:

$2^2\times 5^1\times {\mathrm{617}}^1\times {\mathrm{16981}}^1$

素因数の和:17607

約数の個数: 24

約数和(自身を含む): 440784792

約数和(自身を除く): 231239252

約数列:

[1, 2, 4, 5, 10, 20, 617, 1234, 2468, 3085, 6170, 12340, 16981, 33962, 67924, 84905, 169810, 339620, 10477277, 20954554, 41909108, 52386385, 104772770, 209545540]

約数ペア:

[(1, 209545540), (2, 104772770), (4, 52386385), (5, 41909108), (10, 20954554), (20, 10477277), (617, 339620), (1234, 169810), (2468, 84905), (3085, 67924), (6170, 33962), (12340, 16981)]