79481720

素因数分解:

$2^3\times 5^1\times {\mathrm{1987043}}^1$

素因数の和:1987054

約数の個数: 16

約数和(自身を含む): 178833960

約数和(自身を除く): 99352240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987043, 3974086, 7948172, 9935215, 15896344, 19870430, 39740860, 79481720]

約数ペア:

[(1, 79481720), (2, 39740860), (4, 19870430), (5, 15896344), (8, 9935215), (10, 7948172), (20, 3974086), (40, 1987043)]