18316720

素因数分解:

$2^4\times 5^1\times {\mathrm{228959}}^1$

素因数の和:228972

約数の個数: 20

約数和(自身を含む): 42586560

約数和(自身を除く): 24269840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 228959, 457918, 915836, 1144795, 1831672, 2289590, 3663344, 4579180, 9158360, 18316720]

約数ペア:

[(1, 18316720), (2, 9158360), (4, 4579180), (5, 3663344), (8, 2289590), (10, 1831672), (16, 1144795), (20, 915836), (40, 457918), (80, 228959)]