81591172

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{137}}^1\times {\mathrm{881}}^1$

素因数の和:1048

約数の個数: 36

約数和(自身を含む): 155918196

約数和(自身を除く): 74327024

約数列:

[1, 2, 4, 13, 26, 52, 137, 169, 274, 338, 548, 676, 881, 1762, 1781, 3524, 3562, 7124, 11453, 22906, 23153, 45812, 46306, 92612, 120697, 148889, 241394, 297778, 482788, 595556, 1569061, 3138122, 6276244, 20397793, 40795586, 81591172]

約数ペア:

[(1, 81591172), (2, 40795586), (4, 20397793), (13, 6276244), (26, 3138122), (52, 1569061), (137, 595556), (169, 482788), (274, 297778), (338, 241394), (548, 148889), (676, 120697), (881, 92612), (1762, 46306), (1781, 45812), (3524, 23153), (3562, 22906), (7124, 11453)]