18836856

素因数分解:

$2^3\times 3^2\times {\mathrm{397}}^1\times {\mathrm{659}}^1$

素因数の和:1068

約数の個数: 48

約数和(自身を含む): 51222600

約数和(自身を除く): 32385744

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 397, 659, 794, 1191, 1318, 1588, 1977, 2382, 2636, 3176, 3573, 3954, 4764, 5272, 5931, 7146, 7908, 9528, 11862, 14292, 15816, 23724, 28584, 47448, 261623, 523246, 784869, 1046492, 1569738, 2092984, 2354607, 3139476, 4709214, 6278952, 9418428, 18836856]

約数ペア:

[(1, 18836856), (2, 9418428), (3, 6278952), (4, 4709214), (6, 3139476), (8, 2354607), (9, 2092984), (12, 1569738), (18, 1046492), (24, 784869), (36, 523246), (72, 261623), (397, 47448), (659, 28584), (794, 23724), (1191, 15816), (1318, 14292), (1588, 11862), (1977, 9528), (2382, 7908), (2636, 7146), (3176, 5931), (3573, 5272), (3954, 4764)]