209436170180

素因数分解:

$2^2\times 5^1\times {\mathrm{90289}}^1\times {\mathrm{115981}}^1$

素因数の和:206279

約数の個数: 24

約数和(自身を含む): 439824620760

約数和(自身を除く): 230388450580

約数列:

[1, 2, 4, 5, 10, 20, 90289, 115981, 180578, 231962, 361156, 451445, 463924, 579905, 902890, 1159810, 1805780, 2319620, 10471808509, 20943617018, 41887234036, 52359042545, 104718085090, 209436170180]

約数ペア:

[(1, 209436170180), (2, 104718085090), (4, 52359042545), (5, 41887234036), (10, 20943617018), (20, 10471808509), (90289, 2319620), (115981, 1805780), (180578, 1159810), (231962, 902890), (361156, 579905), (451445, 463924)]