19780758

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:661

約数の個数: 48

約数和(自身を含む): 45826560

約数和(自身を除く): 26045802

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 127, 153, 254, 306, 381, 509, 762, 1018, 1143, 1527, 2159, 2286, 3054, 4318, 4581, 6477, 8653, 9162, 12954, 17306, 19431, 25959, 38862, 51918, 64643, 77877, 129286, 155754, 193929, 387858, 581787, 1098931, 1163574, 2197862, 3296793, 6593586, 9890379, 19780758]

約数ペア:

[(1, 19780758), (2, 9890379), (3, 6593586), (6, 3296793), (9, 2197862), (17, 1163574), (18, 1098931), (34, 581787), (51, 387858), (102, 193929), (127, 155754), (153, 129286), (254, 77877), (306, 64643), (381, 51918), (509, 38862), (762, 25959), (1018, 19431), (1143, 17306), (1527, 12954), (2159, 9162), (2286, 8653), (3054, 6477), (4318, 4581)]