19995732

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:325

約数の個数: 72

約数和(自身を含む): 53071200

約数和(自身を除く): 33075468

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 87, 107, 116, 174, 179, 214, 261, 321, 348, 358, 428, 522, 537, 642, 716, 963, 1044, 1074, 1284, 1611, 1926, 2148, 3103, 3222, 3852, 5191, 6206, 6444, 9309, 10382, 12412, 15573, 18618, 19153, 20764, 27927, 31146, 37236, 38306, 46719, 55854, 57459, 62292, 76612, 93438, 111708, 114918, 172377, 186876, 229836, 344754, 555437, 689508, 1110874, 1666311, 2221748, 3332622, 4998933, 6665244, 9997866, 19995732]

約数ペア:

[(1, 19995732), (2, 9997866), (3, 6665244), (4, 4998933), (6, 3332622), (9, 2221748), (12, 1666311), (18, 1110874), (29, 689508), (36, 555437), (58, 344754), (87, 229836), (107, 186876), (116, 172377), (174, 114918), (179, 111708), (214, 93438), (261, 76612), (321, 62292), (348, 57459), (358, 55854), (428, 46719), (522, 38306), (537, 37236), (642, 31146), (716, 27927), (963, 20764), (1044, 19153), (1074, 18618), (1284, 15573), (1611, 12412), (1926, 10382), (2148, 9309), (3103, 6444), (3222, 6206), (3852, 5191)]