19872740

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2213}}^1$

素因数の和:2671

約数の個数: 24

約数和(自身を含む): 41844600

約数和(自身を除く): 21971860

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2213, 2245, 4426, 4490, 8852, 8980, 11065, 22130, 44260, 993637, 1987274, 3974548, 4968185, 9936370, 19872740]

約数ペア:

[(1, 19872740), (2, 9936370), (4, 4968185), (5, 3974548), (10, 1987274), (20, 993637), (449, 44260), (898, 22130), (1796, 11065), (2213, 8980), (2245, 8852), (4426, 4490)]