21688425

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:180

約数の個数: 96

約数和(自身を含む): 45711360

約数和(自身を除く): 24022935

約数列:

[1, 3, 5, 9, 11, 15, 23, 25, 27, 33, 45, 55, 69, 75, 99, 115, 127, 135, 165, 207, 225, 253, 275, 297, 345, 381, 495, 575, 621, 635, 675, 759, 825, 1035, 1143, 1265, 1397, 1485, 1725, 1905, 2277, 2475, 2921, 3105, 3175, 3429, 3795, 4191, 5175, 5715, 6325, 6831, 6985, 7425, 8763, 9525, 11385, 12573, 14605, 15525, 17145, 18975, 20955, 26289, 28575, 32131, 34155, 34925, 37719, 43815, 56925, 62865, 73025, 78867, 85725, 96393, 104775, 131445, 160655, 170775, 188595, 219075, 289179, 314325, 394335, 481965, 657225, 803275, 867537, 942975, 1445895, 1971675, 2409825, 4337685, 7229475, 21688425]

約数ペア:

[(1, 21688425), (3, 7229475), (5, 4337685), (9, 2409825), (11, 1971675), (15, 1445895), (23, 942975), (25, 867537), (27, 803275), (33, 657225), (45, 481965), (55, 394335), (69, 314325), (75, 289179), (99, 219075), (115, 188595), (127, 170775), (135, 160655), (165, 131445), (207, 104775), (225, 96393), (253, 85725), (275, 78867), (297, 73025), (345, 62865), (381, 56925), (495, 43815), (575, 37719), (621, 34925), (635, 34155), (675, 32131), (759, 28575), (825, 26289), (1035, 20955), (1143, 18975), (1265, 17145), (1397, 15525), (1485, 14605), (1725, 12573), (1905, 11385), (2277, 9525), (2475, 8763), (2921, 7425), (3105, 6985), (3175, 6831), (3429, 6325), (3795, 5715), (4191, 5175)]