21257584

素因数分解:

$2^4\times {\mathrm{797}}^1\times {\mathrm{1667}}^1$

素因数の和:2472

約数の個数: 20

約数和(自身を含む): 41262984

約数和(自身を除く): 20005400

約数列:

[1, 2, 4, 8, 16, 797, 1594, 1667, 3188, 3334, 6376, 6668, 12752, 13336, 26672, 1328599, 2657198, 5314396, 10628792, 21257584]

約数ペア:

[(1, 21257584), (2, 10628792), (4, 5314396), (8, 2657198), (16, 1328599), (797, 26672), (1594, 13336), (1667, 12752), (3188, 6668), (3334, 6376)]