165656720

素因数分解:

$2^4\times 5^1\times {\mathrm{2070709}}^1$

素因数の和:2070722

約数の個数: 20

約数和(自身を含む): 385152060

約数和(自身を除く): 219495340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2070709, 4141418, 8282836, 10353545, 16565672, 20707090, 33131344, 41414180, 82828360, 165656720]

約数ペア:

[(1, 165656720), (2, 82828360), (4, 41414180), (5, 33131344), (8, 20707090), (10, 16565672), (16, 10353545), (20, 8282836), (40, 4141418), (80, 2070709)]