16208840

素因数分解:

$2^3\times 5^1\times {\mathrm{405221}}^1$

素因数の和:405232

約数の個数: 16

約数和(自身を含む): 36469980

約数和(自身を除く): 20261140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 405221, 810442, 1620884, 2026105, 3241768, 4052210, 8104420, 16208840]

約数ペア:

[(1, 16208840), (2, 8104420), (4, 4052210), (5, 3241768), (8, 2026105), (10, 1620884), (20, 810442), (40, 405221)]