18954160

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^2$

素因数の和:202

約数の個数: 60

約数和(自身を含む): 45648864

約数和(自身を除く): 26694704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 71, 80, 94, 142, 188, 235, 284, 355, 376, 470, 568, 710, 752, 940, 1136, 1420, 1880, 2840, 3337, 3760, 5041, 5680, 6674, 10082, 13348, 16685, 20164, 25205, 26696, 33370, 40328, 50410, 53392, 66740, 80656, 100820, 133480, 201640, 236927, 266960, 403280, 473854, 947708, 1184635, 1895416, 2369270, 3790832, 4738540, 9477080, 18954160]

約数ペア:

[(1, 18954160), (2, 9477080), (4, 4738540), (5, 3790832), (8, 2369270), (10, 1895416), (16, 1184635), (20, 947708), (40, 473854), (47, 403280), (71, 266960), (80, 236927), (94, 201640), (142, 133480), (188, 100820), (235, 80656), (284, 66740), (355, 53392), (376, 50410), (470, 40328), (568, 33370), (710, 26696), (752, 25205), (940, 20164), (1136, 16685), (1420, 13348), (1880, 10082), (2840, 6674), (3337, 5680), (3760, 5041)]