21864560

素因数分解:

$2^4\times 5^1\times {\mathrm{337}}^1\times {\mathrm{811}}^1$

素因数の和:1161

約数の個数: 40

約数和(自身を含む): 51048816

約数和(自身を除く): 29184256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 337, 674, 811, 1348, 1622, 1685, 2696, 3244, 3370, 4055, 5392, 6488, 6740, 8110, 12976, 13480, 16220, 26960, 32440, 64880, 273307, 546614, 1093228, 1366535, 2186456, 2733070, 4372912, 5466140, 10932280, 21864560]

約数ペア:

[(1, 21864560), (2, 10932280), (4, 5466140), (5, 4372912), (8, 2733070), (10, 2186456), (16, 1366535), (20, 1093228), (40, 546614), (80, 273307), (337, 64880), (674, 32440), (811, 26960), (1348, 16220), (1622, 13480), (1685, 12976), (2696, 8110), (3244, 6740), (3370, 6488), (4055, 5392)]