19781380

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43003}}^1$

素因数の和:43035

約数の個数: 24

約数和(自身を含む): 43348032

約数和(自身を除く): 23566652

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43003, 86006, 172012, 215015, 430030, 860060, 989069, 1978138, 3956276, 4945345, 9890690, 19781380]

約数ペア:

[(1, 19781380), (2, 9890690), (4, 4945345), (5, 3956276), (10, 1978138), (20, 989069), (23, 860060), (46, 430030), (92, 215015), (115, 172012), (230, 86006), (460, 43003)]