77709680

素因数分解:

$2^4\times 5^1\times {\mathrm{971371}}^1$

素因数の和:971384

約数の個数: 20

約数和(自身を含む): 180675192

約数和(自身を除く): 102965512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 971371, 1942742, 3885484, 4856855, 7770968, 9713710, 15541936, 19427420, 38854840, 77709680]

約数ペア:

[(1, 77709680), (2, 38854840), (4, 19427420), (5, 15541936), (8, 9713710), (10, 7770968), (16, 4856855), (20, 3885484), (40, 1942742), (80, 971371)]