21391600

素因数分解:

$2^4\times 5^2\times {\mathrm{53479}}^1$

素因数の和:53497

約数の個数: 30

約数和(自身を含む): 51394280

約数和(自身を除く): 30002680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 53479, 106958, 213916, 267395, 427832, 534790, 855664, 1069580, 1336975, 2139160, 2673950, 4278320, 5347900, 10695800, 21391600]

約数ペア:

[(1, 21391600), (2, 10695800), (4, 5347900), (5, 4278320), (8, 2673950), (10, 2139160), (16, 1336975), (20, 1069580), (25, 855664), (40, 534790), (50, 427832), (80, 267395), (100, 213916), (200, 106958), (400, 53479)]