18838640

素因数分解:

$2^4\times 5^1\times {\mathrm{235483}}^1$

素因数の和:235496

約数の個数: 20

約数和(自身を含む): 43800024

約数和(自身を除く): 24961384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 235483, 470966, 941932, 1177415, 1883864, 2354830, 3767728, 4709660, 9419320, 18838640]

約数ペア:

[(1, 18838640), (2, 9419320), (4, 4709660), (5, 3767728), (8, 2354830), (10, 1883864), (16, 1177415), (20, 941932), (40, 470966), (80, 235483)]