21087803

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4903}}^1$

素因数の和:4954

約数の個数: 16

約数和(自身を含む): 25422336

約数和(自身を除く): 4334533

約数列:

[1, 11, 17, 23, 187, 253, 391, 4301, 4903, 53933, 83351, 112769, 916861, 1240459, 1917073, 21087803]

約数ペア:

[(1, 21087803), (11, 1917073), (17, 1240459), (23, 916861), (187, 112769), (253, 83351), (391, 53933), (4301, 4903)]