19726904

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{439}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 38253600

約数和(自身を除く): 18526696

約数列:

[1, 2, 4, 8, 41, 82, 137, 164, 274, 328, 439, 548, 878, 1096, 1756, 3512, 5617, 11234, 17999, 22468, 35998, 44936, 60143, 71996, 120286, 143992, 240572, 481144, 2465863, 4931726, 9863452, 19726904]

約数ペア:

[(1, 19726904), (2, 9863452), (4, 4931726), (8, 2465863), (41, 481144), (82, 240572), (137, 143992), (164, 120286), (274, 71996), (328, 60143), (439, 44936), (548, 35998), (878, 22468), (1096, 17999), (1756, 11234), (3512, 5617)]