20860785

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 43535232

約数和(自身を除く): 22674447

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 37, 45, 51, 55, 67, 85, 99, 111, 153, 165, 185, 187, 201, 255, 333, 335, 407, 495, 555, 561, 603, 629, 737, 765, 935, 1005, 1139, 1221, 1665, 1683, 1887, 2035, 2211, 2479, 2805, 3015, 3145, 3417, 3663, 3685, 5661, 5695, 6105, 6633, 6919, 7437, 8415, 9435, 10251, 11055, 12395, 12529, 17085, 18315, 20757, 22311, 27269, 28305, 33165, 34595, 37185, 37587, 42143, 51255, 62271, 62645, 81807, 103785, 111555, 112761, 126429, 136345, 187935, 210715, 245421, 311355, 379287, 409035, 463573, 563805, 632145, 1227105, 1390719, 1896435, 2317865, 4172157, 6953595, 20860785]

約数ペア:

[(1, 20860785), (3, 6953595), (5, 4172157), (9, 2317865), (11, 1896435), (15, 1390719), (17, 1227105), (33, 632145), (37, 563805), (45, 463573), (51, 409035), (55, 379287), (67, 311355), (85, 245421), (99, 210715), (111, 187935), (153, 136345), (165, 126429), (185, 112761), (187, 111555), (201, 103785), (255, 81807), (333, 62645), (335, 62271), (407, 51255), (495, 42143), (555, 37587), (561, 37185), (603, 34595), (629, 33165), (737, 28305), (765, 27269), (935, 22311), (1005, 20757), (1139, 18315), (1221, 17085), (1665, 12529), (1683, 12395), (1887, 11055), (2035, 10251), (2211, 9435), (2479, 8415), (2805, 7437), (3015, 6919), (3145, 6633), (3417, 6105), (3663, 5695), (3685, 5661)]