820296440

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{47581}}^1$

素因数の和:48023

約数の個数: 32

約数和(自身を含む): 1849988160

約数和(自身を除く): 1029691720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8620, 17240, 47581, 95162, 190324, 237905, 380648, 475810, 951620, 1903240, 20507411, 41014822, 82029644, 102537055, 164059288, 205074110, 410148220, 820296440]

約数ペア:

[(1, 820296440), (2, 410148220), (4, 205074110), (5, 164059288), (8, 102537055), (10, 82029644), (20, 41014822), (40, 20507411), (431, 1903240), (862, 951620), (1724, 475810), (2155, 380648), (3448, 237905), (4310, 190324), (8620, 95162), (17240, 47581)]