18215199

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{4243}}^1$

素因数の和:4308

約数の個数: 20

約数和(自身を含む): 27730296

約数和(自身を除く): 9515097

約数列:

[1, 3, 9, 27, 53, 81, 159, 477, 1431, 4243, 4293, 12729, 38187, 114561, 224879, 343683, 674637, 2023911, 6071733, 18215199]

約数ペア:

[(1, 18215199), (3, 6071733), (9, 2023911), (27, 674637), (53, 343683), (81, 224879), (159, 114561), (477, 38187), (1431, 12729), (4243, 4293)]