20273920

素因数分解:

$2^8\times 5^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 49742784

約数和(自身を除く): 29468864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 256, 320, 337, 376, 470, 640, 674, 752, 940, 1280, 1348, 1504, 1685, 1880, 2696, 3008, 3370, 3760, 5392, 6016, 6740, 7520, 10784, 12032, 13480, 15040, 15839, 21568, 26960, 30080, 31678, 43136, 53920, 60160, 63356, 79195, 86272, 107840, 126712, 158390, 215680, 253424, 316780, 431360, 506848, 633560, 1013696, 1267120, 2027392, 2534240, 4054784, 5068480, 10136960, 20273920]

約数ペア:

[(1, 20273920), (2, 10136960), (4, 5068480), (5, 4054784), (8, 2534240), (10, 2027392), (16, 1267120), (20, 1013696), (32, 633560), (40, 506848), (47, 431360), (64, 316780), (80, 253424), (94, 215680), (128, 158390), (160, 126712), (188, 107840), (235, 86272), (256, 79195), (320, 63356), (337, 60160), (376, 53920), (470, 43136), (640, 31678), (674, 30080), (752, 26960), (940, 21568), (1280, 15839), (1348, 15040), (1504, 13480), (1685, 12032), (1880, 10784), (2696, 7520), (3008, 6740), (3370, 6016), (3760, 5392)]