20518884

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 54058368

約数和(自身を除く): 33539484

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 67, 94, 134, 141, 181, 188, 201, 268, 282, 362, 402, 423, 543, 564, 603, 724, 804, 846, 1086, 1206, 1629, 1692, 2172, 2412, 3149, 3258, 6298, 6516, 8507, 9447, 12127, 12596, 17014, 18894, 24254, 25521, 28341, 34028, 36381, 37788, 48508, 51042, 56682, 72762, 76563, 102084, 109143, 113364, 145524, 153126, 218286, 306252, 436572, 569969, 1139938, 1709907, 2279876, 3419814, 5129721, 6839628, 10259442, 20518884]

約数ペア:

[(1, 20518884), (2, 10259442), (3, 6839628), (4, 5129721), (6, 3419814), (9, 2279876), (12, 1709907), (18, 1139938), (36, 569969), (47, 436572), (67, 306252), (94, 218286), (134, 153126), (141, 145524), (181, 113364), (188, 109143), (201, 102084), (268, 76563), (282, 72762), (362, 56682), (402, 51042), (423, 48508), (543, 37788), (564, 36381), (603, 34028), (724, 28341), (804, 25521), (846, 24254), (1086, 18894), (1206, 17014), (1629, 12596), (1692, 12127), (2172, 9447), (2412, 8507), (3149, 6516), (3258, 6298)]