18012260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{128659}}^1$

素因数の和:128675

約数の個数: 24

約数和(自身を含む): 43229760

約数和(自身を除く): 25217500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 128659, 257318, 514636, 643295, 900613, 1286590, 1801226, 2573180, 3602452, 4503065, 9006130, 18012260]

約数ペア:

[(1, 18012260), (2, 9006130), (4, 4503065), (5, 3602452), (7, 2573180), (10, 1801226), (14, 1286590), (20, 900613), (28, 643295), (35, 514636), (70, 257318), (140, 128659)]