28700775

素因数分解:

$3^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{641}}^1$

素因数の和:856

約数の個数: 36

約数和(自身を含む): 51745200

約数和(自身を除く): 23044425

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 199, 225, 597, 641, 995, 1791, 1923, 2985, 3205, 4975, 5769, 8955, 9615, 14925, 16025, 28845, 44775, 48075, 127559, 144225, 382677, 637795, 1148031, 1913385, 3188975, 5740155, 9566925, 28700775]

約数ペア:

[(1, 28700775), (3, 9566925), (5, 5740155), (9, 3188975), (15, 1913385), (25, 1148031), (45, 637795), (75, 382677), (199, 144225), (225, 127559), (597, 48075), (641, 44775), (995, 28845), (1791, 16025), (1923, 14925), (2985, 9615), (3205, 8955), (4975, 5769)]