81640580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{583147}}^1$

素因数の和:583163

約数の個数: 24

約数和(自身を含む): 195937728

約数和(自身を除く): 114297148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 583147, 1166294, 2332588, 2915735, 4082029, 5831470, 8164058, 11662940, 16328116, 20410145, 40820290, 81640580]

約数ペア:

[(1, 81640580), (2, 40820290), (4, 20410145), (5, 16328116), (7, 11662940), (10, 8164058), (14, 5831470), (20, 4082029), (28, 2915735), (35, 2332588), (70, 1166294), (140, 583147)]