77890760

素因数分解:

$2^3\times 5^1\times {\mathrm{1947269}}^1$

素因数の和:1947280

約数の個数: 16

約数和(自身を含む): 175254300

約数和(自身を除く): 97363540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1947269, 3894538, 7789076, 9736345, 15578152, 19472690, 38945380, 77890760]

約数ペア:

[(1, 77890760), (2, 38945380), (4, 19472690), (5, 15578152), (8, 9736345), (10, 7789076), (20, 3894538), (40, 1947269)]