81182608

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{607}}^1\times {\mathrm{643}}^1$

素因数の和:1271

約数の個数: 40

約数和(自身を含む): 169933568

約数和(自身を除く): 88750960

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 607, 643, 1214, 1286, 2428, 2572, 4856, 5144, 7891, 8359, 9712, 10288, 15782, 16718, 31564, 33436, 63128, 66872, 126256, 133744, 390301, 780602, 1561204, 3122408, 5073913, 6244816, 10147826, 20295652, 40591304, 81182608]

約数ペア:

[(1, 81182608), (2, 40591304), (4, 20295652), (8, 10147826), (13, 6244816), (16, 5073913), (26, 3122408), (52, 1561204), (104, 780602), (208, 390301), (607, 133744), (643, 126256), (1214, 66872), (1286, 63128), (2428, 33436), (2572, 31564), (4856, 16718), (5144, 15782), (7891, 10288), (8359, 9712)]