18736605

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 34759296

約数和(自身を除く): 16022691

約数列:

[1, 3, 5, 9, 15, 23, 43, 45, 69, 115, 129, 207, 215, 345, 387, 421, 645, 989, 1035, 1263, 1935, 2105, 2967, 3789, 4945, 6315, 8901, 9683, 14835, 18103, 18945, 29049, 44505, 48415, 54309, 87147, 90515, 145245, 162927, 271545, 416369, 435735, 814635, 1249107, 2081845, 3747321, 6245535, 18736605]

約数ペア:

[(1, 18736605), (3, 6245535), (5, 3747321), (9, 2081845), (15, 1249107), (23, 814635), (43, 435735), (45, 416369), (69, 271545), (115, 162927), (129, 145245), (207, 90515), (215, 87147), (345, 54309), (387, 48415), (421, 44505), (645, 29049), (989, 18945), (1035, 18103), (1263, 14835), (1935, 9683), (2105, 8901), (2967, 6315), (3789, 4945)]