129680240

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2521}}^1$

素因数の和:3177

約数の個数: 40

約数和(自身を含む): 302095248

約数和(自身を除く): 172415008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 2521, 2572, 3215, 5042, 5144, 6430, 10084, 10288, 12605, 12860, 20168, 25210, 25720, 40336, 50420, 51440, 100840, 201680, 1621003, 3242006, 6484012, 8105015, 12968024, 16210030, 25936048, 32420060, 64840120, 129680240]

約数ペア:

[(1, 129680240), (2, 64840120), (4, 32420060), (5, 25936048), (8, 16210030), (10, 12968024), (16, 8105015), (20, 6484012), (40, 3242006), (80, 1621003), (643, 201680), (1286, 100840), (2521, 51440), (2572, 50420), (3215, 40336), (5042, 25720), (5144, 25210), (6430, 20168), (10084, 12860), (10288, 12605)]