21258848

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{3931}}^1$

素因数の和:3967

約数の個数: 36

約数和(自身を含む): 45332028

約数和(自身を除く): 24073180

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 338, 416, 676, 1352, 2704, 3931, 5408, 7862, 15724, 31448, 51103, 62896, 102206, 125792, 204412, 408824, 664339, 817648, 1328678, 1635296, 2657356, 5314712, 10629424, 21258848]

約数ペア:

[(1, 21258848), (2, 10629424), (4, 5314712), (8, 2657356), (13, 1635296), (16, 1328678), (26, 817648), (32, 664339), (52, 408824), (104, 204412), (169, 125792), (208, 102206), (338, 62896), (416, 51103), (676, 31448), (1352, 15724), (2704, 7862), (3931, 5408)]