21650824

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{509}}^1$

素因数の和:937

約数の個数: 32

約数和(自身を含む): 43911000

約数和(自身を除く): 22260176

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 409, 509, 818, 1018, 1636, 2036, 3272, 4072, 5317, 6617, 10634, 13234, 21268, 26468, 42536, 52936, 208181, 416362, 832724, 1665448, 2706353, 5412706, 10825412, 21650824]

約数ペア:

[(1, 21650824), (2, 10825412), (4, 5412706), (8, 2706353), (13, 1665448), (26, 832724), (52, 416362), (104, 208181), (409, 52936), (509, 42536), (818, 26468), (1018, 21268), (1636, 13234), (2036, 10634), (3272, 6617), (4072, 5317)]