18354292

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 36590400

約数和(自身を除く): 18236108

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 89, 109, 172, 178, 218, 356, 436, 473, 946, 979, 1199, 1892, 1958, 2398, 3827, 3916, 4687, 4796, 7654, 9374, 9701, 15308, 18748, 19402, 38804, 42097, 51557, 84194, 103114, 106711, 168388, 206228, 213422, 417143, 426844, 834286, 1668572, 4588573, 9177146, 18354292]

約数ペア:

[(1, 18354292), (2, 9177146), (4, 4588573), (11, 1668572), (22, 834286), (43, 426844), (44, 417143), (86, 213422), (89, 206228), (109, 168388), (172, 106711), (178, 103114), (218, 84194), (356, 51557), (436, 42097), (473, 38804), (946, 19402), (979, 18748), (1199, 15308), (1892, 9701), (1958, 9374), (2398, 7654), (3827, 4796), (3916, 4687)]