21361040

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1949}}^1$

素因数の和:2099

約数の個数: 40

約数和(自身を含む): 50052600

約数和(自身を除く): 28691560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1949, 2192, 2740, 3898, 5480, 7796, 9745, 10960, 15592, 19490, 31184, 38980, 77960, 155920, 267013, 534026, 1068052, 1335065, 2136104, 2670130, 4272208, 5340260, 10680520, 21361040]

約数ペア:

[(1, 21361040), (2, 10680520), (4, 5340260), (5, 4272208), (8, 2670130), (10, 2136104), (16, 1335065), (20, 1068052), (40, 534026), (80, 267013), (137, 155920), (274, 77960), (548, 38980), (685, 31184), (1096, 19490), (1370, 15592), (1949, 10960), (2192, 9745), (2740, 7796), (3898, 5480)]