28702025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 41515200

約数和(自身を除く): 12813175

約数列:

[1, 5, 11, 25, 29, 55, 59, 61, 145, 275, 295, 305, 319, 649, 671, 725, 1475, 1525, 1595, 1711, 1769, 3245, 3355, 3599, 7975, 8555, 8845, 16225, 16775, 17995, 18821, 19459, 39589, 42775, 44225, 89975, 94105, 97295, 104371, 197945, 470525, 486475, 521855, 989725, 1148081, 2609275, 5740405, 28702025]

約数ペア:

[(1, 28702025), (5, 5740405), (11, 2609275), (25, 1148081), (29, 989725), (55, 521855), (59, 486475), (61, 470525), (145, 197945), (275, 104371), (295, 97295), (305, 94105), (319, 89975), (649, 44225), (671, 42775), (725, 39589), (1475, 19459), (1525, 18821), (1595, 17995), (1711, 16775), (1769, 16225), (3245, 8845), (3355, 8555), (3599, 7975)]