20771608

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:368

約数の個数: 64

約数和(自身を含む): 46609920

約数和(自身を除く): 25838312

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 67, 88, 104, 134, 143, 268, 271, 286, 536, 542, 572, 737, 871, 1084, 1144, 1474, 1742, 2168, 2948, 2981, 3484, 3523, 5896, 5962, 6968, 7046, 9581, 11924, 14092, 18157, 19162, 23848, 28184, 36314, 38324, 38753, 72628, 76648, 77506, 145256, 155012, 199727, 236041, 310024, 399454, 472082, 798908, 944164, 1597816, 1888328, 2596451, 5192902, 10385804, 20771608]

約数ペア:

[(1, 20771608), (2, 10385804), (4, 5192902), (8, 2596451), (11, 1888328), (13, 1597816), (22, 944164), (26, 798908), (44, 472082), (52, 399454), (67, 310024), (88, 236041), (104, 199727), (134, 155012), (143, 145256), (268, 77506), (271, 76648), (286, 72628), (536, 38753), (542, 38324), (572, 36314), (737, 28184), (871, 23848), (1084, 19162), (1144, 18157), (1474, 14092), (1742, 11924), (2168, 9581), (2948, 7046), (2981, 6968), (3484, 5962), (3523, 5896)]