78090280

素因数分解:

$2^3\times 5^1\times {\mathrm{1952257}}^1$

素因数の和:1952268

約数の個数: 16

約数和(自身を含む): 175703220

約数和(自身を除く): 97612940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1952257, 3904514, 7809028, 9761285, 15618056, 19522570, 39045140, 78090280]

約数ペア:

[(1, 78090280), (2, 39045140), (4, 19522570), (5, 15618056), (8, 9761285), (10, 7809028), (20, 3904514), (40, 1952257)]