81377156

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67589}}^1$

素因数の和:67643

約数の個数: 24

約数和(自身を含む): 166541760

約数和(自身を除く): 85164604

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 67589, 135178, 270356, 473123, 946246, 1892492, 2906327, 5812654, 11625308, 20344289, 40688578, 81377156]

約数ペア:

[(1, 81377156), (2, 40688578), (4, 20344289), (7, 11625308), (14, 5812654), (28, 2906327), (43, 1892492), (86, 946246), (172, 473123), (301, 270356), (602, 135178), (1204, 67589)]