21400984

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1549}}^1$

素因数の和:1723

約数の個数: 32

約数和(自身を含む): 44082000

約数和(自身を除く): 22681016

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 157, 314, 628, 1256, 1549, 1727, 3098, 3454, 6196, 6908, 12392, 13816, 17039, 34078, 68156, 136312, 243193, 486386, 972772, 1945544, 2675123, 5350246, 10700492, 21400984]

約数ペア:

[(1, 21400984), (2, 10700492), (4, 5350246), (8, 2675123), (11, 1945544), (22, 972772), (44, 486386), (88, 243193), (157, 136312), (314, 68156), (628, 34078), (1256, 17039), (1549, 13816), (1727, 12392), (3098, 6908), (3454, 6196)]