21130256

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5099}}^1$

素因数の和:5151

約数の個数: 40

約数和(自身を含む): 48062400

約数和(自身を除く): 26932144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 259, 296, 518, 592, 1036, 2072, 4144, 5099, 10198, 20396, 35693, 40792, 71386, 81584, 142772, 188663, 285544, 377326, 571088, 754652, 1320641, 1509304, 2641282, 3018608, 5282564, 10565128, 21130256]

約数ペア:

[(1, 21130256), (2, 10565128), (4, 5282564), (7, 3018608), (8, 2641282), (14, 1509304), (16, 1320641), (28, 754652), (37, 571088), (56, 377326), (74, 285544), (112, 188663), (148, 142772), (259, 81584), (296, 71386), (518, 40792), (592, 35693), (1036, 20396), (2072, 10198), (4144, 5099)]