18435940

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2053}}^1$

素因数の和:2511

約数の個数: 24

約数和(自身を含む): 38820600

約数和(自身を除く): 20384660

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2053, 2245, 4106, 4490, 8212, 8980, 10265, 20530, 41060, 921797, 1843594, 3687188, 4608985, 9217970, 18435940]

約数ペア:

[(1, 18435940), (2, 9217970), (4, 4608985), (5, 3687188), (10, 1843594), (20, 921797), (449, 41060), (898, 20530), (1796, 10265), (2053, 8980), (2245, 8212), (4106, 4490)]