28260675

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:209

約数の個数: 72

約数和(自身を含む): 54472704

約数和(自身を除く): 26212029

約数列:

[1, 3, 5, 9, 15, 23, 25, 43, 45, 69, 75, 115, 127, 129, 207, 215, 225, 345, 381, 387, 575, 635, 645, 989, 1035, 1075, 1143, 1725, 1905, 1935, 2921, 2967, 3175, 3225, 4945, 5175, 5461, 5715, 8763, 8901, 9525, 9675, 14605, 14835, 16383, 24725, 26289, 27305, 28575, 43815, 44505, 49149, 73025, 74175, 81915, 125603, 131445, 136525, 219075, 222525, 245745, 376809, 409575, 628015, 657225, 1130427, 1228725, 1884045, 3140075, 5652135, 9420225, 28260675]

約数ペア:

[(1, 28260675), (3, 9420225), (5, 5652135), (9, 3140075), (15, 1884045), (23, 1228725), (25, 1130427), (43, 657225), (45, 628015), (69, 409575), (75, 376809), (115, 245745), (127, 222525), (129, 219075), (207, 136525), (215, 131445), (225, 125603), (345, 81915), (381, 74175), (387, 73025), (575, 49149), (635, 44505), (645, 43815), (989, 28575), (1035, 27305), (1075, 26289), (1143, 24725), (1725, 16383), (1905, 14835), (1935, 14605), (2921, 9675), (2967, 9525), (3175, 8901), (3225, 8763), (4945, 5715), (5175, 5461)]