21298256

素因数分解:

$2^4\times 7^1\times {\mathrm{397}}^1\times {\mathrm{479}}^1$

素因数の和:891

約数の個数: 40

約数和(自身を含む): 47377920

約数和(自身を除く): 26079664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 397, 479, 794, 958, 1588, 1916, 2779, 3176, 3353, 3832, 5558, 6352, 6706, 7664, 11116, 13412, 22232, 26824, 44464, 53648, 190163, 380326, 760652, 1331141, 1521304, 2662282, 3042608, 5324564, 10649128, 21298256]

約数ペア:

[(1, 21298256), (2, 10649128), (4, 5324564), (7, 3042608), (8, 2662282), (14, 1521304), (16, 1331141), (28, 760652), (56, 380326), (112, 190163), (397, 53648), (479, 44464), (794, 26824), (958, 22232), (1588, 13412), (1916, 11116), (2779, 7664), (3176, 6706), (3353, 6352), (3832, 5558)]