18287440

素因数分解:

$2^4\times 5^1\times {\mathrm{228593}}^1$

素因数の和:228606

約数の個数: 20

約数和(自身を含む): 42518484

約数和(自身を除く): 24231044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 228593, 457186, 914372, 1142965, 1828744, 2285930, 3657488, 4571860, 9143720, 18287440]

約数ペア:

[(1, 18287440), (2, 9143720), (4, 4571860), (5, 3657488), (8, 2285930), (10, 1828744), (16, 1142965), (20, 914372), (40, 457186), (80, 228593)]