20629539

素因数分解:

$3^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{503}}^1$

素因数の和:557

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 16142301

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 93, 147, 189, 217, 279, 441, 503, 651, 837, 1323, 1509, 1519, 1953, 3521, 4527, 4557, 5859, 10563, 13581, 13671, 15593, 24647, 31689, 41013, 46779, 73941, 95067, 109151, 140337, 221823, 327453, 421011, 665469, 764057, 982359, 2292171, 2947077, 6876513, 20629539]

約数ペア:

[(1, 20629539), (3, 6876513), (7, 2947077), (9, 2292171), (21, 982359), (27, 764057), (31, 665469), (49, 421011), (63, 327453), (93, 221823), (147, 140337), (189, 109151), (217, 95067), (279, 73941), (441, 46779), (503, 41013), (651, 31689), (837, 24647), (1323, 15593), (1509, 13671), (1519, 13581), (1953, 10563), (3521, 5859), (4527, 4557)]