21049655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1$

素因数の和:559

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 8810185

約数列:

[1, 5, 11, 17, 47, 55, 85, 187, 235, 479, 517, 799, 935, 2395, 2585, 3995, 5269, 8143, 8789, 22513, 26345, 40715, 43945, 89573, 112565, 247643, 382721, 447865, 1238215, 1913605, 4209931, 21049655]

約数ペア:

[(1, 21049655), (5, 4209931), (11, 1913605), (17, 1238215), (47, 447865), (55, 382721), (85, 247643), (187, 112565), (235, 89573), (479, 43945), (517, 40715), (799, 26345), (935, 22513), (2395, 8789), (2585, 8143), (3995, 5269)]