78988240

素因数分解:

$2^4\times 5^1\times {\mathrm{987353}}^1$

素因数の和:987366

約数の個数: 20

約数和(自身を含む): 183647844

約数和(自身を除く): 104659604

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 987353, 1974706, 3949412, 4936765, 7898824, 9873530, 15797648, 19747060, 39494120, 78988240]

約数ペア:

[(1, 78988240), (2, 39494120), (4, 19747060), (5, 15797648), (8, 9873530), (10, 7898824), (16, 4936765), (20, 3949412), (40, 1974706), (80, 987353)]