78130508

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{887}}^1$

素因数の和:990

約数の個数: 36

約数和(自身を含む): 146834352

約数和(自身を除く): 68703844

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 244, 361, 722, 887, 1159, 1444, 1774, 2318, 3548, 4636, 16853, 22021, 33706, 44042, 54107, 67412, 88084, 108214, 216428, 320207, 640414, 1028033, 1280828, 2056066, 4112132, 19532627, 39065254, 78130508]

約数ペア:

[(1, 78130508), (2, 39065254), (4, 19532627), (19, 4112132), (38, 2056066), (61, 1280828), (76, 1028033), (122, 640414), (244, 320207), (361, 216428), (722, 108214), (887, 88084), (1159, 67412), (1444, 54107), (1774, 44042), (2318, 33706), (3548, 22021), (4636, 16853)]