18420560

素因数分解:

$2^4\times 5^1\times {\mathrm{230257}}^1$

素因数の和:230270

約数の個数: 20

約数和(自身を含む): 42827988

約数和(自身を除く): 24407428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 230257, 460514, 921028, 1151285, 1842056, 2302570, 3684112, 4605140, 9210280, 18420560]

約数ペア:

[(1, 18420560), (2, 9210280), (4, 4605140), (5, 3684112), (8, 2302570), (10, 1842056), (16, 1151285), (20, 921028), (40, 460514), (80, 230257)]