21058256

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{683}}^1$

素因数の和:779

約数の個数: 40

約数和(自身を含む): 42747264

約数和(自身を除く): 21689008

約数列:

[1, 2, 4, 8, 16, 41, 47, 82, 94, 164, 188, 328, 376, 656, 683, 752, 1366, 1927, 2732, 3854, 5464, 7708, 10928, 15416, 28003, 30832, 32101, 56006, 64202, 112012, 128404, 224024, 256808, 448048, 513616, 1316141, 2632282, 5264564, 10529128, 21058256]

約数ペア:

[(1, 21058256), (2, 10529128), (4, 5264564), (8, 2632282), (16, 1316141), (41, 513616), (47, 448048), (82, 256808), (94, 224024), (164, 128404), (188, 112012), (328, 64202), (376, 56006), (656, 32101), (683, 30832), (752, 28003), (1366, 15416), (1927, 10928), (2732, 7708), (3854, 5464)]