18186640

素因数分解:

$2^4\times 5^1\times {\mathrm{463}}^1\times {\mathrm{491}}^1$

素因数の和:967

約数の個数: 40

約数和(自身を含む): 42461568

約数和(自身を除く): 24274928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 463, 491, 926, 982, 1852, 1964, 2315, 2455, 3704, 3928, 4630, 4910, 7408, 7856, 9260, 9820, 18520, 19640, 37040, 39280, 227333, 454666, 909332, 1136665, 1818664, 2273330, 3637328, 4546660, 9093320, 18186640]

約数ペア:

[(1, 18186640), (2, 9093320), (4, 4546660), (5, 3637328), (8, 2273330), (10, 1818664), (16, 1136665), (20, 909332), (40, 454666), (80, 227333), (463, 39280), (491, 37040), (926, 19640), (982, 18520), (1852, 9820), (1964, 9260), (2315, 7856), (2455, 7408), (3704, 4910), (3928, 4630)]