18912440

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{337}}^1$

素因数の和:432

約数の個数: 64

約数和(自身を含む): 45264960

約数和(自身を除く): 26352520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 61, 92, 115, 122, 184, 230, 244, 305, 337, 460, 488, 610, 674, 920, 1220, 1348, 1403, 1685, 2440, 2696, 2806, 3370, 5612, 6740, 7015, 7751, 11224, 13480, 14030, 15502, 20557, 28060, 31004, 38755, 41114, 56120, 62008, 77510, 82228, 102785, 155020, 164456, 205570, 310040, 411140, 472811, 822280, 945622, 1891244, 2364055, 3782488, 4728110, 9456220, 18912440]

約数ペア:

[(1, 18912440), (2, 9456220), (4, 4728110), (5, 3782488), (8, 2364055), (10, 1891244), (20, 945622), (23, 822280), (40, 472811), (46, 411140), (61, 310040), (92, 205570), (115, 164456), (122, 155020), (184, 102785), (230, 82228), (244, 77510), (305, 62008), (337, 56120), (460, 41114), (488, 38755), (610, 31004), (674, 28060), (920, 20557), (1220, 15502), (1348, 14030), (1403, 13480), (1685, 11224), (2440, 7751), (2696, 7015), (2806, 6740), (3370, 5612)]