81390998

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^2$

素因数の和:456

約数の個数: 24

約数和(自身を含む): 133362432

約数和(自身を除く): 51971434

約数列:

[1, 2, 13, 26, 127, 157, 254, 314, 1651, 2041, 3302, 4082, 19939, 24649, 39878, 49298, 259207, 320437, 518414, 640874, 3130423, 6260846, 40695499, 81390998]

約数ペア:

[(1, 81390998), (2, 40695499), (13, 6260846), (26, 3130423), (127, 640874), (157, 518414), (254, 320437), (314, 259207), (1651, 49298), (2041, 39878), (3302, 24649), (4082, 19939)]