21000812552

素因数分解:

$2^3\times {\mathrm{103}}^2\times {\mathrm{349}}^1\times {\mathrm{709}}^1$

素因数の和:1270

約数の個数: 48

約数和(自身を含む): 39932707500

約数和(自身を除く): 18931894948

約数列:

[1, 2, 4, 8, 103, 206, 349, 412, 698, 709, 824, 1396, 1418, 2792, 2836, 5672, 10609, 21218, 35947, 42436, 71894, 73027, 84872, 143788, 146054, 247441, 287576, 292108, 494882, 584216, 989764, 1979528, 3702541, 7405082, 7521781, 14810164, 15043562, 25486423, 29620328, 30087124, 50972846, 60174248, 101945692, 203891384, 2625101569, 5250203138, 10500406276, 21000812552]

約数ペア:

[(1, 21000812552), (2, 10500406276), (4, 5250203138), (8, 2625101569), (103, 203891384), (206, 101945692), (349, 60174248), (412, 50972846), (698, 30087124), (709, 29620328), (824, 25486423), (1396, 15043562), (1418, 14810164), (2792, 7521781), (2836, 7405082), (5672, 3702541), (10609, 1979528), (21218, 989764), (35947, 584216), (42436, 494882), (71894, 292108), (73027, 287576), (84872, 247441), (143788, 146054)]