78818440

素因数分解:

$2^3\times 5^1\times {\mathrm{1970461}}^1$

素因数の和:1970472

約数の個数: 16

約数和(自身を含む): 177341580

約数和(自身を除く): 98523140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1970461, 3940922, 7881844, 9852305, 15763688, 19704610, 39409220, 78818440]

約数ペア:

[(1, 78818440), (2, 39409220), (4, 19704610), (5, 15763688), (8, 9852305), (10, 7881844), (20, 3940922), (40, 1970461)]