28611225

素因数分解:

$3^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:292

約数の個数: 60

約数和(自身を含む): 54014400

約数和(自身を除く): 25403175

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 75, 81, 135, 199, 213, 225, 355, 405, 597, 639, 675, 995, 1065, 1775, 1791, 1917, 2025, 2985, 3195, 4975, 5325, 5373, 5751, 8955, 9585, 14129, 14925, 15975, 16119, 26865, 28755, 42387, 44775, 47925, 70645, 80595, 127161, 134325, 143775, 211935, 353225, 381483, 402975, 635805, 1059675, 1144449, 1907415, 3179025, 5722245, 9537075, 28611225]

約数ペア:

[(1, 28611225), (3, 9537075), (5, 5722245), (9, 3179025), (15, 1907415), (25, 1144449), (27, 1059675), (45, 635805), (71, 402975), (75, 381483), (81, 353225), (135, 211935), (199, 143775), (213, 134325), (225, 127161), (355, 80595), (405, 70645), (597, 47925), (639, 44775), (675, 42387), (995, 28755), (1065, 26865), (1775, 16119), (1791, 15975), (1917, 14925), (2025, 14129), (2985, 9585), (3195, 8955), (4975, 5751), (5325, 5373)]