20418408

素因数分解:

$2^3\times 3^2\times {\mathrm{61}}^1\times {\mathrm{4649}}^1$

素因数の和:4722

約数の個数: 48

約数和(自身を含む): 56218500

約数和(自身を除く): 35800092

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 61, 72, 122, 183, 244, 366, 488, 549, 732, 1098, 1464, 2196, 4392, 4649, 9298, 13947, 18596, 27894, 37192, 41841, 55788, 83682, 111576, 167364, 283589, 334728, 567178, 850767, 1134356, 1701534, 2268712, 2552301, 3403068, 5104602, 6806136, 10209204, 20418408]

約数ペア:

[(1, 20418408), (2, 10209204), (3, 6806136), (4, 5104602), (6, 3403068), (8, 2552301), (9, 2268712), (12, 1701534), (18, 1134356), (24, 850767), (36, 567178), (61, 334728), (72, 283589), (122, 167364), (183, 111576), (244, 83682), (366, 55788), (488, 41841), (549, 37192), (732, 27894), (1098, 18596), (1464, 13947), (2196, 9298), (4392, 4649)]