19721128

素因数分解:

$2^3\times 7^3\times {\mathrm{7187}}^1$

素因数の和:7214

約数の個数: 32

約数和(自身を含む): 43128000

約数和(自身を除く): 23406872

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7187, 14374, 28748, 50309, 57496, 100618, 201236, 352163, 402472, 704326, 1408652, 2465141, 2817304, 4930282, 9860564, 19721128]

約数ペア:

[(1, 19721128), (2, 9860564), (4, 4930282), (7, 2817304), (8, 2465141), (14, 1408652), (28, 704326), (49, 402472), (56, 352163), (98, 201236), (196, 100618), (343, 57496), (392, 50309), (686, 28748), (1372, 14374), (2744, 7187)]