87871480

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{24683}}^1$

素因数の和:24783

約数の個数: 32

約数和(自身を含む): 199940400

約数和(自身を除く): 112068920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 24683, 49366, 98732, 123415, 197464, 246830, 493660, 987320, 2196787, 4393574, 8787148, 10983935, 17574296, 21967870, 43935740, 87871480]

約数ペア:

[(1, 87871480), (2, 43935740), (4, 21967870), (5, 17574296), (8, 10983935), (10, 8787148), (20, 4393574), (40, 2196787), (89, 987320), (178, 493660), (356, 246830), (445, 197464), (712, 123415), (890, 98732), (1780, 49366), (3560, 24683)]