16840280

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2521}}^1$

素因数の和:2699

約数の個数: 32

約数和(自身を含む): 38132640

約数和(自身を除く): 21292360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 2521, 3340, 5042, 6680, 10084, 12605, 20168, 25210, 50420, 100840, 421007, 842014, 1684028, 2105035, 3368056, 4210070, 8420140, 16840280]

約数ペア:

[(1, 16840280), (2, 8420140), (4, 4210070), (5, 3368056), (8, 2105035), (10, 1684028), (20, 842014), (40, 421007), (167, 100840), (334, 50420), (668, 25210), (835, 20168), (1336, 12605), (1670, 10084), (2521, 6680), (3340, 5042)]