78725720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67867}}^1$

素因数の和:67907

約数の個数: 32

約数和(自身を含む): 183243600

約数和(自身を除く): 104517880

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 67867, 135734, 271468, 339335, 542936, 678670, 1357340, 1968143, 2714680, 3936286, 7872572, 9840715, 15745144, 19681430, 39362860, 78725720]

約数ペア:

[(1, 78725720), (2, 39362860), (4, 19681430), (5, 15745144), (8, 9840715), (10, 7872572), (20, 3936286), (29, 2714680), (40, 1968143), (58, 1357340), (116, 678670), (145, 542936), (232, 339335), (290, 271468), (580, 135734), (1160, 67867)]