28197988

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 62717760

約数和(自身を除く): 34519772

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 59, 91, 101, 118, 169, 182, 202, 236, 338, 364, 404, 413, 676, 707, 767, 826, 1183, 1313, 1414, 1534, 1652, 2366, 2626, 2828, 3068, 4732, 5252, 5369, 5959, 9191, 9971, 10738, 11918, 17069, 18382, 19942, 21476, 23836, 34138, 36764, 39884, 41713, 68276, 69797, 77467, 83426, 119483, 139594, 154934, 166852, 238966, 279188, 309868, 477932, 542269, 1007071, 1084538, 2014142, 2169076, 4028284, 7049497, 14098994, 28197988]

約数ペア:

[(1, 28197988), (2, 14098994), (4, 7049497), (7, 4028284), (13, 2169076), (14, 2014142), (26, 1084538), (28, 1007071), (52, 542269), (59, 477932), (91, 309868), (101, 279188), (118, 238966), (169, 166852), (182, 154934), (202, 139594), (236, 119483), (338, 83426), (364, 77467), (404, 69797), (413, 68276), (676, 41713), (707, 39884), (767, 36764), (826, 34138), (1183, 23836), (1313, 21476), (1414, 19942), (1534, 18382), (1652, 17069), (2366, 11918), (2626, 10738), (2828, 9971), (3068, 9191), (4732, 5959), (5252, 5369)]