28987556

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{137}}^1\times {\mathrm{313}}^1$

素因数の和:480

約数の個数: 36

約数和(自身を含む): 55508292

約数和(自身を除く): 26520736

約数列:

[1, 2, 4, 13, 26, 52, 137, 169, 274, 313, 338, 548, 626, 676, 1252, 1781, 3562, 4069, 7124, 8138, 16276, 23153, 42881, 46306, 52897, 85762, 92612, 105794, 171524, 211588, 557453, 1114906, 2229812, 7246889, 14493778, 28987556]

約数ペア:

[(1, 28987556), (2, 14493778), (4, 7246889), (13, 2229812), (26, 1114906), (52, 557453), (137, 211588), (169, 171524), (274, 105794), (313, 92612), (338, 85762), (548, 52897), (626, 46306), (676, 42881), (1252, 23153), (1781, 16276), (3562, 8138), (4069, 7124)]