51457240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{29917}}^1$

素因数の和:29971

約数の個数: 32

約数和(自身を含む): 118475280

約数和(自身を除く): 67018040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 29917, 59834, 119668, 149585, 239336, 299170, 598340, 1196680, 1286431, 2572862, 5145724, 6432155, 10291448, 12864310, 25728620, 51457240]

約数ペア:

[(1, 51457240), (2, 25728620), (4, 12864310), (5, 10291448), (8, 6432155), (10, 5145724), (20, 2572862), (40, 1286431), (43, 1196680), (86, 598340), (172, 299170), (215, 239336), (344, 149585), (430, 119668), (860, 59834), (1720, 29917)]