21038368

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:617

約数の個数: 48

約数和(自身を含む): 45130176

約数和(自身を除く): 24091808

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 103, 104, 206, 208, 412, 416, 491, 824, 982, 1339, 1648, 1964, 2678, 3296, 3928, 5356, 6383, 7856, 10712, 12766, 15712, 21424, 25532, 42848, 50573, 51064, 101146, 102128, 202292, 204256, 404584, 657449, 809168, 1314898, 1618336, 2629796, 5259592, 10519184, 21038368]

約数ペア:

[(1, 21038368), (2, 10519184), (4, 5259592), (8, 2629796), (13, 1618336), (16, 1314898), (26, 809168), (32, 657449), (52, 404584), (103, 204256), (104, 202292), (206, 102128), (208, 101146), (412, 51064), (416, 50573), (491, 42848), (824, 25532), (982, 21424), (1339, 15712), (1648, 12766), (1964, 10712), (2678, 7856), (3296, 6383), (3928, 5356)]