81175916

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{683}}^1\times {\mathrm{691}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 145785024

約数和(自身を除く): 64609108

約数列:

[1, 2, 4, 43, 86, 172, 683, 691, 1366, 1382, 2732, 2764, 29369, 29713, 58738, 59426, 117476, 118852, 471953, 943906, 1887812, 20293979, 40587958, 81175916]

約数ペア:

[(1, 81175916), (2, 40587958), (4, 20293979), (43, 1887812), (86, 943906), (172, 471953), (683, 118852), (691, 117476), (1366, 59426), (1382, 58738), (2732, 29713), (2764, 29369)]