20199040

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{853}}^1$

素因数の和:909

約数の個数: 64

約数和(自身を含む): 49651560

約数和(自身を除く): 29452520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 853, 1184, 1480, 1706, 2368, 2960, 3412, 4265, 4736, 5920, 6824, 8530, 11840, 13648, 17060, 23680, 27296, 31561, 34120, 54592, 63122, 68240, 109184, 126244, 136480, 157805, 252488, 272960, 315610, 504976, 545920, 631220, 1009952, 1262440, 2019904, 2524880, 4039808, 5049760, 10099520, 20199040]

約数ペア:

[(1, 20199040), (2, 10099520), (4, 5049760), (5, 4039808), (8, 2524880), (10, 2019904), (16, 1262440), (20, 1009952), (32, 631220), (37, 545920), (40, 504976), (64, 315610), (74, 272960), (80, 252488), (128, 157805), (148, 136480), (160, 126244), (185, 109184), (296, 68240), (320, 63122), (370, 54592), (592, 34120), (640, 31561), (740, 27296), (853, 23680), (1184, 17060), (1480, 13648), (1706, 11840), (2368, 8530), (2960, 6824), (3412, 5920), (4265, 4736)]