21059828

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{487}}^1\times {\mathrm{569}}^1$

素因数の和:1079

約数の個数: 24

約数和(自身を含む): 38942400

約数和(自身を除く): 17882572

約数列:

[1, 2, 4, 19, 38, 76, 487, 569, 974, 1138, 1948, 2276, 9253, 10811, 18506, 21622, 37012, 43244, 277103, 554206, 1108412, 5264957, 10529914, 21059828]

約数ペア:

[(1, 21059828), (2, 10529914), (4, 5264957), (19, 1108412), (38, 554206), (76, 277103), (487, 43244), (569, 37012), (974, 21622), (1138, 18506), (1948, 10811), (2276, 9253)]