20171998

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{130987}}^1$

素因数の和:131007

約数の個数: 16

約数和(自身を含む): 37724544

約数和(自身を除く): 17552546

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 130987, 261974, 916909, 1440857, 1833818, 2881714, 10085999, 20171998]

約数ペア:

[(1, 20171998), (2, 10085999), (7, 2881714), (11, 1833818), (14, 1440857), (22, 916909), (77, 261974), (154, 130987)]