20216876655

素因数分解:

$3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1\times {\mathrm{241}}^1$

素因数の和:784

約数の個数: 64

約数和(自身を含む): 33035904000

約数和(自身を除く): 12819027345

約数列:

[1, 3, 5, 15, 157, 179, 199, 241, 471, 537, 597, 723, 785, 895, 995, 1205, 2355, 2685, 2985, 3615, 28103, 31243, 35621, 37837, 43139, 47959, 84309, 93729, 106863, 113511, 129417, 140515, 143877, 156215, 178105, 189185, 215695, 239795, 421545, 468645, 534315, 567555, 647085, 719385, 5592497, 6772823, 7529563, 8584661, 16777491, 20318469, 22588689, 25753983, 27962485, 33864115, 37647815, 42923305, 83887455, 101592345, 112943445, 128769915, 1347791777, 4043375331, 6738958885, 20216876655]

約数ペア:

[(1, 20216876655), (3, 6738958885), (5, 4043375331), (15, 1347791777), (157, 128769915), (179, 112943445), (199, 101592345), (241, 83887455), (471, 42923305), (537, 37647815), (597, 33864115), (723, 27962485), (785, 25753983), (895, 22588689), (995, 20318469), (1205, 16777491), (2355, 8584661), (2685, 7529563), (2985, 6772823), (3615, 5592497), (28103, 719385), (31243, 647085), (35621, 567555), (37837, 534315), (43139, 468645), (47959, 421545), (84309, 239795), (93729, 215695), (106863, 189185), (113511, 178105), (129417, 156215), (140515, 143877)]