129355760

素因数分解:

$2^4\times 5^1\times {\mathrm{1616947}}^1$

素因数の和:1616960

約数の個数: 20

約数和(自身を含む): 300752328

約数和(自身を除く): 171396568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1616947, 3233894, 6467788, 8084735, 12935576, 16169470, 25871152, 32338940, 64677880, 129355760]

約数ペア:

[(1, 129355760), (2, 64677880), (4, 32338940), (5, 25871152), (8, 16169470), (10, 12935576), (16, 8084735), (20, 6467788), (40, 3233894), (80, 1616947)]