80456720

素因数分解:

$2^4\times 5^1\times {\mathrm{1005709}}^1$

素因数の和:1005722

約数の個数: 20

約数和(自身を含む): 187062060

約数和(自身を除く): 106605340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1005709, 2011418, 4022836, 5028545, 8045672, 10057090, 16091344, 20114180, 40228360, 80456720]

約数ペア:

[(1, 80456720), (2, 40228360), (4, 20114180), (5, 16091344), (8, 10057090), (10, 8045672), (16, 5028545), (20, 4022836), (40, 2011418), (80, 1005709)]