639417868

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{7841}}^1$

素因数の和:7930

約数の個数: 48

約数和(自身を含む): 1251583200

約数和(自身を除く): 612165332

約数列:

[1, 2, 4, 19, 29, 37, 38, 58, 74, 76, 116, 148, 551, 703, 1073, 1102, 1406, 2146, 2204, 2812, 4292, 7841, 15682, 20387, 31364, 40774, 81548, 148979, 227389, 290117, 297958, 454778, 580234, 595916, 909556, 1160468, 4320391, 5512223, 8413393, 8640782, 11024446, 16826786, 17281564, 22048892, 33653572, 159854467, 319708934, 639417868]

約数ペア:

[(1, 639417868), (2, 319708934), (4, 159854467), (19, 33653572), (29, 22048892), (37, 17281564), (38, 16826786), (58, 11024446), (74, 8640782), (76, 8413393), (116, 5512223), (148, 4320391), (551, 1160468), (703, 909556), (1073, 595916), (1102, 580234), (1406, 454778), (2146, 297958), (2204, 290117), (2812, 227389), (4292, 148979), (7841, 81548), (15682, 40774), (20387, 31364)]