71252920

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{4133}}^1$

素因数の和:4575

約数の個数: 32

約数和(自身を含む): 160729920

約数和(自身を除く): 89477000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4133, 4310, 8266, 8620, 16532, 17240, 20665, 33064, 41330, 82660, 165320, 1781323, 3562646, 7125292, 8906615, 14250584, 17813230, 35626460, 71252920]

約数ペア:

[(1, 71252920), (2, 35626460), (4, 17813230), (5, 14250584), (8, 8906615), (10, 7125292), (20, 3562646), (40, 1781323), (431, 165320), (862, 82660), (1724, 41330), (2155, 33064), (3448, 20665), (4133, 17240), (4310, 16532), (8266, 8620)]