81800860

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{18341}}^1$

素因数の和:18573

約数の個数: 24

約数和(自身を含む): 172561536

約数和(自身を除く): 90760676

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 18341, 36682, 73364, 91705, 183410, 366820, 4090043, 8180086, 16360172, 20450215, 40900430, 81800860]

約数ペア:

[(1, 81800860), (2, 40900430), (4, 20450215), (5, 16360172), (10, 8180086), (20, 4090043), (223, 366820), (446, 183410), (892, 91705), (1115, 73364), (2230, 36682), (4460, 18341)]