21406833

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 37180416

約数和(自身を除く): 15773583

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 97, 113, 217, 279, 291, 339, 651, 679, 791, 873, 1017, 1953, 2037, 2373, 3007, 3503, 6111, 7119, 9021, 10509, 10961, 21049, 24521, 27063, 31527, 32883, 63147, 73563, 76727, 98649, 189441, 220689, 230181, 339791, 690543, 1019373, 2378537, 3058119, 7135611, 21406833]

約数ペア:

[(1, 21406833), (3, 7135611), (7, 3058119), (9, 2378537), (21, 1019373), (31, 690543), (63, 339791), (93, 230181), (97, 220689), (113, 189441), (217, 98649), (279, 76727), (291, 73563), (339, 63147), (651, 32883), (679, 31527), (791, 27063), (873, 24521), (1017, 21049), (1953, 10961), (2037, 10509), (2373, 9021), (3007, 7119), (3503, 6111)]