18721660

素因数分解:

$2^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{1861}}^1$

素因数の和:2373

約数の個数: 24

約数和(自身を含む): 39414816

約数和(自身を除く): 20693156

約数列:

[1, 2, 4, 5, 10, 20, 503, 1006, 1861, 2012, 2515, 3722, 5030, 7444, 9305, 10060, 18610, 37220, 936083, 1872166, 3744332, 4680415, 9360830, 18721660]

約数ペア:

[(1, 18721660), (2, 9360830), (4, 4680415), (5, 3744332), (10, 1872166), (20, 936083), (503, 37220), (1006, 18610), (1861, 10060), (2012, 9305), (2515, 7444), (3722, 5030)]