19317320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1021}}^1$

素因数の和:1086

約数の個数: 64

約数和(自身を含む): 48565440

約数和(自身を除く): 29248120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1021, 1720, 1892, 2042, 2365, 3784, 4084, 4730, 5105, 8168, 9460, 10210, 11231, 18920, 20420, 22462, 40840, 43903, 44924, 56155, 87806, 89848, 112310, 175612, 219515, 224620, 351224, 439030, 449240, 482933, 878060, 965866, 1756120, 1931732, 2414665, 3863464, 4829330, 9658660, 19317320]

約数ペア:

[(1, 19317320), (2, 9658660), (4, 4829330), (5, 3863464), (8, 2414665), (10, 1931732), (11, 1756120), (20, 965866), (22, 878060), (40, 482933), (43, 449240), (44, 439030), (55, 351224), (86, 224620), (88, 219515), (110, 175612), (172, 112310), (215, 89848), (220, 87806), (344, 56155), (430, 44924), (440, 43903), (473, 40840), (860, 22462), (946, 20420), (1021, 18920), (1720, 11231), (1892, 10210), (2042, 9460), (2365, 8168), (3784, 5105), (4084, 4730)]